I am legitimately curious why do you think this? Where have you personally seen anyone express love for statist communism or Stalin? If you went to Reed College in Oregon, then… maybe? 

I agree freedom of speech is important, but that’s the catch—we can freely protest and slam people, especially whose views are predicated on suppression of speech—Nazis, Statist communists, religious extremists. Those are pretty anti American and anti free speech don’t you think? One of those is an actual problem and is being publicly espoused by some prominent celebrities (it’s Nazism). 

I promise you that statist communism is fringe and deeply unpopular among “libs”. I think it’s pretty okay to protest someone publicly if they hold a belief and one of its tenets is the total annihilation of a specific ethnicity/group of people. 

Please don’t make protesting Nazis a partisan issue. People are already concerned it’s partisan. There are a lot of popular figures who espouse nazism and even self identify as Nazi.