Photo: Occupy Philadelphia on the march with a police escort.
The American political system is broken. Money has corrupted it and made it impossible for candidates of principle to have any chance of running for, much less winning significant elections, such as for senator or president. Voting is an exercise in futility. Nevertheless, for some of us it's still worth fighting the battle to restore democracy and end the plutocracy that the US has become. We feel that this is the only real way to fight for the underpriviledged and the forgotten, even if our tactics often result in the unwanted attention of the police.
Part of the battle is calling on those in power to do the right thing, even if it's unlikely that they will. For example, there is no reason why our current president can't support marriage equality, other than his own cynical political calculations. But he won't ever, unfortunately, unless people pressure him to do the right thing.