Canadian here, since we have similar laws. You have to be a real extreme bigot to be banned entry on that alone. I mean you have to be the type of idiot who would publicly declare himself a Nazi and a racist, like in a song or something.
Americans are always uncomfortable with Canadian hate speech laws. But 99% of us don’t ever have to worry about them, because 99% of us aren’t running around calling ourselves nazis and asking for the extermination of an ethnic minority.