I have to admit, I'm torn.
On the one hand, I feel like the biggest wimp in the world for even considering not going down there. I feel like it's 1969 and I live in Vestal, NY but I just don't feel like going to a concert this weekend.
Except I think it's less like Woodstock and more like the 1968 Democratic National Convention, or, perhaps, like Days of Rage. As certain as the news media seems to be that all the protesters will be flinging urine-filled balloons and setting cars on fire, that's how sure I am that the cops will be beating people up indiscriminately. Maybe my arrest really did have the desired effect, because I really don't want to waste another weekend in jail for no reason other than that the cops disagree with my politics.
Of course, it may not even matter. Thus far I know of two cases* of police harassment of people I know personally, who were not involved in anything protest-y at the time. One, because he was hanging out in a household of known anarchists, making music and minding his own business, and one who was actually arrested and charged with several felonies because he ran a red light on his bicycle. The police made it clear that he was arrested for looking like an anarchist while being in Pittsburgh; when they arrested him they asked all sorts of questions about where he was from and if he was in town for the G20.
I still don't know what I'm going to do, but I think I'm leaning toward jail support. I remember how much it meant to me, after two and a half days in jail, to be released and find people waiting outside, cheering for us, and offering us hot meals, cigarettes, and rides to wherever we needed to go. I may be afraid to get my head bashed in at a protest, but I feel like the least I can do is bring a carton of smokes down to the jail and support the folks who are willing to put their butts -- and their skulls -- on the line.
ETA: Make that three cases of police harassment thus far, and we're only talking about within my personal circle of friends.