CNN WASHINGTON CORRESPONDENT: It’s a state holiday in Massachusetts for Patriots Day. Copley Square is in the middle of the city, schools are closed, a lot of businesses closed, state and city offices. You have tourists, people off work, that tends to be where they go. Either to watch the runners after the game breaks up, very close to Boston common and public garden. If you are looking — and I want to emphasize the “if” — to make some kind of political statement, that would be the place to do it, Copley Square on marathon day.