I'm a (something), which is legal, non-violent and quite usual nowadays. But if 'the powers that be' decide that (somethingism) is a threat to the state (probably because it will reduce the profits on some megacorp) then I'll be a criminal. And us (somethings) will be hunted down using, for example, facial recognition technology. 'For the greater good' to quote some spoof cop flic!
Has no-one read '1984' recently?