As much as I am not in favor of hate speech I believe that it should 100% be allowed. If I prevent someone from speaking today then tomorrow it could be someone preventing me from speaking. I also think that free speech is not a privilege but a right. My driver's license is a privilege and can be taken away for multiple reasons. Speech, on the other hand, should be allowed no matter what. It's up to you whether or not you provide that person with an audience.