If I recall correctly (IIRC), in some states it is already illegal to wear a hood or obscuring face mask in public areas. The origin of the law was, I think, anti-KKK and thus not specific against the antidiots like these anarchists and antifa. Still it is there to be used IF the local government has the ‘gonads’ to do it!
KKK is just another Democratic originated group. How can they go against one of their own?