Well HERE's a creative response to the Mosque at ground zero!

[Logan Darklighter]

Fair enough all around. Can't see anything to disagree with there, really. Just to be clear though - when you say "harassing businesses or individuals that supported Prop 8" I assume you mean individuals in the sense of public individuals? Famous people like entertainers or those in government, that is. Not a private individual who supports it, right? The context of your later paragraph seems to indicate that, but I'm just making sure.

I think a private individual who took public actions on the issue (donating, publically supporting it) is perfectly fair game for being picketed or otherwise criticised for their actions (harassment is perhaps too loaded a word). For instance, if they own a business, organising a boycott against that business (which happened). Picketing their house if they'd protested for it, sure, that's tit for tat. Accosting them in such a way that they reasonably feared for their safety or their family's safety, no, that's wrong (personally accosting them on their way to work, for instance, or harassing their children).
I don't think it would be fair to harass individuals over their private actions such as voting, however.

Right then. No problems there. Carry on.