Jewish men could wear hats and married Jewish women could wear hats or wigs. As long as they don't ban all headwear, it's a good idea since it would mostly affect Muslims. Muslim "modesty" goes beyond the laws of tzniut. If they don't like it, they can go back to their own countries. Most Anti-Semitic attacks in Canada as in Europe are carried out by Muslims. They don't have white Neo-Nazi Nazis or black Nazis in large numbers like in the US.