It's perfectly reasonable for countries to pick and choose who they accept as new residents and citizens. Irrational hated of one of the most successful parts of American society is a pretty good grounds for not allowing you in.

Besides, when you actually look into the details of these deportations they appear to be pretty much all for more than just saying wrong things. Eg organizing protests involving clearly illegal acts like trespassing on private property, vandalism, violence, material support of terrorists, etc.