I have a similar question to what the OP asked. I founded an organization right before the start of the war in Iraq for students and professors. Our main goal was to organize seminars and meetings for the campus to discuss their views on what was going on. We also did some great things like raise money for humanitarian efforts. Im not sure if I am going to put this on my amcas or secondaries because I dont want to look like a hippie (adcoms usually being very conservative) I also was only president for one year before I transfered to another school. Alot of members in this organization were protestors of the war, and also Bush, including myself, but that is not what the main goal for this organization was about. It was more about raising awareness on campus, no matter what your views on the war were, but just a chance to voice his/her own opinions.
I certainly dont want to alienate myself from any interviewers, but I think my reasoning for creating this organization says a lot about the kind of person I am, Im just not sure if adcoms will look down on that I guess...