Step 1 Set-up
Have one or two guys go to a place where there are people rioting and protesting against gay rights. The 2 guys need to be dressed kind of feminine or awkwardly like in speedo's or something. You can also wear disguises if you want, or don't, either way works.
Step 2 Climax
The two guys need to act really gay in front of the mob, whether its talking, or even go as far as kissing each other or groping. Maybe one of them can be holding a rubber fist or some other unique toy. Do whatever to piss of the mob.
Step 3 Shit Hits the Fan
By now someone in the mob should lash out at the two "gay" guys whether its yelling or physically coming at you (no pun intended.) When someone stands up towards you, thats when one of the "gay" guys forcefully makes out with the guy against it. If things get too out of hand, more people in speedo's should come out. Like everybody in the jackass crew comes out in speedo thongs. By bringing out the homophobia in the people will make them look stupid and make it seem hilarious.
By living in South Dakota, I can only picture all the shit that goes on in the big cities, it would be nice to see some of it come to life. :P