OMG. You must be kidding me. YESSSSSSSSSSSSSSSSSS there very well could be a law applicable to wherever the original poster is in Ontario Canada that specifically prohibits writing in chalk on a public sidewalk. I am sorry if you felt that I implied that such a law did not exist or could not exist. Do you feel better now?
And once again, I have no problem agreeing with the obvious. Ontario is a province in Canada and Canada is not part of the US. But I am not sure why you felt compelled to point that out. Did anyone suggest that the original poster was not in Ontario Canada or that Ontario Canada was part of the US?