http://www.2600.com/rnc2004/

tried to find more news, but... it's sick. everything else basically implied all those arrested were resisting arrest and directly protesting and whatnot. and didn't mention anything about detainment or detainment conditions.

http://www.usatoday.com/news/politicselections/nation/president/2004-08-31-protesters_x.htm
http://www.foxnews.com/story/0,2933,131018,00.html
http://www.democracynow.org/article.pl?sid=04/09/01/1424236
http://www.denverpost.com/Stories/0,1413,36~29805~2372208,00.html
http://www.troyrecord.com/site/news.cfm?newsid=12832013&BRD=1170&PAG=740&dept_id=226964&rfi=6
http://hm.indymedia.org/feature/display/9248/index.php

some reports of aftermath...

http://www.nydailynews.com/front/story/228616p-196196c.html
http://www.freerepublic.com/focus/f-news/1204491/posts
http://www.soaw.org/new/newswire_detail.php?id=500

ish.