This is a classic case dealing with freedom of expression. The City of Peterborough had passed a bylaw prohibiting the posting of any material on city property. The bylaw prohibited the posting of “any bill, poster or other advertisements of any nature,” on any “tree . . . pole, post, stanchion or another object. . .” within the city limits. Ramsden put up advertising posters on several hydro poles to advertise an upcoming concert for his band. He was charged with committing an offense under the bylaw. It is not disputed that he posted the bills on the hydro pole. Indicate what defenses he might have to the charge and the arguments for both sides and likely outcome.