Yes. If you want 1000 people instead of 10,000.
The location is just symbolic. City Hall has nothing to do with this. Even at the marriage licence issuing level, the government entity is L.A. County, not L.A. City. But Norwalk is an awfully boring place for a protest.
The actual government entity to protest is the state government, and that would mean going up to Sacramento (where I understand a big protest is planned for November 22 ... and I can't go because, ironically, I have my last straight wedding that day).
The protest is not really against the government at all. They did not do this to us. It is against our fellow Californians ... and City Hall is just as meaningful or meaningless as any place else.
But it's not in a gay stronghold or at the gates of the enemy, like all the previous ones. Viva la tiny difference.