This goes back to the days when they were trying to regulate porn. "I'll know it when I see it." This is such a slippery slope that everyone should be running away from.

The left should be ashamed of themselves.

Hate speech is horrible, hate actions even worse, but that is a cost of freedom. Funny how liberals would go to bat for radical Islam to be protected, but they find it easy to restrict the thoughts of those they disagree with.