No, hate speech should not be protected, and there’s an obvious reason for that. We already recognize that speech that purposely harms people is not protected, for example going into a theater room and screaming FIRE causing people to panic and stampede and killing someone the person will be charged with involuntary manslaughter. That is not so different from someone going online and saying “gay people should be killed” and causing people to go out and do that, in fact I would even drop the involuntary from the charges against that person, because his intention was clearly to incite someone to do it. I’m not taking away the responsibility from the person who committed the act, but this situation is similar to a how in a group planning a crime even the boss who was in every meeting telling people to commit the crime but did not actually participate in gets charged with. And the same excuses apply “No, I didn’t think that because I told them to go and kill someone they would do it” is not a valid defense for a mafia boss, and it shouldn’t be for any person with public influence.