Your objection here actually makes it sound like you're objecting to the speech more than the chalking. Under existing constitutional law, he would've had a ri

Your objection here actually makes it sound like you're objecting to the speech more than the chalking. Under existing constitutional law, he would've had a right to spend every day for six months standing on the sidewalk outside the bank holding the "Stop big banks" message on a picket sign. That isn't harassment, even if it were a family-owned business (though residences are a murkier area), unless he were doing things like attempting to block the entrance, or shouting intimidating stuff at customers. Sidewalks are a traditional public forum, and picketing on them is protected, including picketing against the business located there. So there's nothing illegal with the content part: disparaging the business on a daily basis, right on the sidewalk outside their business. The method, writing it in chalk on the sidewalk, I'll agree, is not allowed. But it does not seem much worse than standing on the sidewalk with a picket, when it comes to what you seem to find offensive about the conduct.