Any time someone shouts to the rooftops "people like me, but definitely not me, are without exception bad people, except for me, and need laws reigning them in!", that person should probably be deeply investigated.

This should be basic standard procedure. I believe the bible put it "judge not lest ye be judged": Judge them. Some, I assume, are good people, even if their ideals are draconian and oppressive, and their policies can simply be voted "nay" against. The rest... You'd probably solve half of all crimes just by checking in with those who suspiciously highlight themselves in desire to clamp down on people like themselves (but totally not themselves specifically).