If she doesn't have a brick house, maybe she could paint her house like an American flag and have her message on that. In a neighborhood where I used to live there was a "notorious" neighbor who got mad at the neighborhood association and painted his house pink with purple polka dots. That happened several years before I moved there. Even though his house had been repainted normal colors for a long time, no one EVER forgot. I'm don't think they bothered him after that.
ROTFLMAO! I have no doubt that this Neighborhood Association also has all sorts of restrictive covenants on how houses are painted and modified, but it would certainly make national news if she painted it as an American flag or with portraits of the Founding Fathers on it :-)
I recall hearing back in the 1970's about an anarchist in France who painted his house black as a political statement ( or, being an anarchist, perhaps it was an apolitical statement?) . I don't think that anyone really got upset over it though, the French being what they are....