I don't speed when I think there's a police speed-trap on a given road. I don't tell lewd jokes in front of strangers. People modify their behaviour to avoid ne

I don't speed when I think there's a police speed-trap on a given road. I don't tell lewd jokes in front of strangers. People modify their behaviour to avoid negative consequences. You don't need to change their deep thinking, necessarily. Just their behaviour. That starts the social change.