Here are two stories I have about working with homeless people in Open Space.  Neither of these were done outside, but in both cases, homeless people were involved in the action planning and later took leadership roles with both initiatives:
<br><br><a href="http://www.chriscorrigan.com/wiki/pmwiki.php?n=Main.VictoriaUrbanDevelopmentAgreement">http://www.chriscorrigan.com/wiki/pmwiki.php?n=Main.VictoriaUrbanDevelopmentAgreement</a><br><a href="http://www.chriscorrigan.com/wiki/pmwiki.php?n=Main.PrinceGeorgeUrbanAboriginalStrategy">
http://www.chriscorrigan.com/wiki/pmwiki.php?n=Main.PrinceGeorgeUrbanAboriginalStrategy</a><br><br>There were also homeless folks at these gatherings:<br><br><a href="http://www.chriscorrigan.com/wiki/pmwiki.php?n=Main.ThePeoplesGathering">
http://www.chriscorrigan.com/wiki/pmwiki.php?n=Main.ThePeoplesGathering</a><br><a href="http://www.chriscorrigan.com/wiki/pmwiki.php?n=Main.PublicLegalEducationForAboriginalFamilies">http://www.chriscorrigan.com/wiki/pmwiki.php?n=Main.PublicLegalEducationForAboriginalFamilies
</a><br><a href="http://www.chriscorrigan.com/wiki/pmwiki.php?n=Main.VictimServicesForYouth">http://www.chriscorrigan.com/wiki/pmwiki.php?n=Main.VictimServicesForYouth</a><br><br>Cheers,<br><br>Chris<br><br><div><span class="gmail_quote">
On 4/2/07, <b class="gmail_sendername">avner</b> <<a href="mailto:avnerh@zahav.net.il">avnerh@zahav.net.il</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">






<div bgcolor="#ffffff">
<div><font face="Arial" size="2">Agout 4 years ago, Tova and I opened a 4 hours 
space for a group of very poor people who were demonstrating aginst the poverty 
situation in Israel. They penetrated a large square in the Middle of the 
rich neighborhoods of Tel Aviv and lived there for months in sort of tents 
and pieces of cloths. They called the place `The bread square` (a loaf 
of bread in hebrew is also a village square)</font></div>
<div><font face="Arial" size="2"></font> </div>
<div><font face="Arial" size="2">We were part of a group who visited and were trying 
to help them. An OS with them and their supporters seemed to be interesting for 
them so we did it there in the open. The side of an old bus, in which their 
leader was living, served as the Market place.</font></div>
<div><font face="Arial" size="2"></font> </div>
<div><font face="Arial" size="2">The about  30 people who participated were 
engaged but as far as remember the ones who actually took it into actions 
were mainly the supporters</font></div>
<div><font face="Arial" size="2"></font> </div>
<div><font face="Arial" size="2">Avner Haramati</font></div>
<div><font face="Arial" size="2">Jerusalem</font></div>
<div><font face="Arial" size="2"></font> </div>
<div><font face="Arial" size="2"></font> </div>
<blockquote style="border-left: 2px solid rgb(0, 0, 0); padding-right: 0px; padding-left: 5px; margin-left: 5px; margin-right: 0px;"><span class="q">
  <div style="font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-size-adjust: none; font-stretch: normal;">----- Original Message ----- </div>
  <div style="background: rgb(228, 228, 228) none repeat scroll 0% 50%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial; font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-size-adjust: none; font-stretch: normal;">
<b>From:</b> 
  <a title="e.kolenaty@aon.at" href="mailto:e.kolenaty@aon.at" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">Erich Kolenaty</a> 
  </div>
  <div style="font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-size-adjust: none; font-stretch: normal;"><b>To:</b> <a title="OSLIST@LISTSERV.BOISESTATE.EDU" href="mailto:OSLIST@LISTSERV.BOISESTATE.EDU" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">
OSLIST@LISTSERV.BOISESTATE.EDU</a> 
  </div></span><div><span class="e" id="q_111b2611decb52c4_2">
  <div style="font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-size-adjust: none; font-stretch: normal;"><b>Sent:</b> Monday, April 02, 2007 1:09 
PM</div>
  <div style="font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-size-adjust: none; font-stretch: normal;"><b>Subject:</b> OS with homeless in city 
  park?</div>
  <div><br></div>
  <div><font color="#ff00ff" face="Arial" size="2"></font> </div>
  <div><font color="#ff00ff" face="Arial" size="2">Doug,</font></div>
  <div><font color="#ff00ff" face="Arial" size="2"></font> </div>
  <div><font color="#ff00ff" face="Arial" size="2">I don't know whether 
  the emphasis of your search is for "homeless" or for "city park". I once 
  did an Open Space in a Vienna city park together with the fabulous Florian 
  Fischer. It was a gathering for a NGO called "bridges for peace" and a short, 
  but brilliant event. Very romantic, in the darkening park around an 
  enlighted monument. Maybe it is the story you are looking for. Florian and me 
  wrote a story about this event, which was published in a book. You can 
  download the story here <a href="http://www.togger.org/%7Eredsys/doc_transformation/Open_Space_1-7.pdf" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">http://www.togger.org/~redsys/doc_transformation/Open_Space_1-7.pdf
</a>. 
  Unfortunately it is written in german, but maybe this fits perfectly to you 
  name ;-)).</font></div>
  <div><font color="#ff00ff" face="Arial" size="2"></font> </div>
  <div><font color="#ff00ff" face="Arial" size="2">Greetings from lovely 
  Vienna</font></div>
  <div><font color="#ff00ff" face="Arial" size="2">Erich</font></div>
  <div><font color="#ff00ff" face="Arial" size="2"></font> </div>
  <blockquote style="border-left: 2px solid rgb(255, 0, 255); padding-right: 0px; padding-left: 5px; margin-left: 5px; margin-right: 0px;">
    <div style="font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-size-adjust: none; font-stretch: normal;">----- Original Message ----- </div>
    <div style="background: rgb(228, 228, 228) none repeat scroll 0% 50%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial; font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-size-adjust: none; font-stretch: normal;">
<b>From:</b> 
    <a title="76066.515@compuserve.com" href="mailto:76066.515@compuserve.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">douglas germann</a> </div>
    <div style="font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-size-adjust: none; font-stretch: normal;"><b>To:</b> <a title="OSLIST@LISTSERV.BOISESTATE.EDU" href="mailto:OSLIST@LISTSERV.BOISESTATE.EDU" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">
OSLIST@LISTSERV.BOISESTATE.EDU</a> 
    </div>
    <div style="font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-size-adjust: none; font-stretch: normal;"><b>Sent:</b> Saturday, March 31, 2007 9:15 
    PM</div>
    <div style="font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-size-adjust: none; font-stretch: normal;"><b>Subject:</b> [OSLIST] OS with homeless in 
    city park?</div>
    <div><br></div>Hi--<br><br>Floating around our group is a story of gathering 
    homeless in a city<br>park for an OS. Does anybody recall where I can find 
    out more of that<br>story and who facilitated it? Was it in 
    Vienna?<br><br>Any other stories of OS among homeless 
    people?<br><br>Thanks!<br><br>:- Doug. 
    Germann<br><br>*<br>*<br>==========================================================<br><a href="mailto:OSLIST@LISTSERV.BOISESTATE.EDU" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">OSLIST@LISTSERV.BOISESTATE.EDU
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</span></div></blockquote></div><br><br clear="all"><br>-- <br>CHRIS CORRIGAN<br>Facilitation - Training<br>Open Space Technology<br><br>Weblog: <a href="http://www.chriscorrigan.com/parkinglot">http://www.chriscorrigan.com/parkinglot
</a><br>Site: <a href="http://www.chriscorrigan.com">http://www.chriscorrigan.com</a><br><br>Principal, Harvest Moon Consultants, Ltd.<br><a href="http://www.harvestmoonconsultants.com">http://www.harvestmoonconsultants.com
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