“As long as you campaign peacefully, i.e. do not use or incite violence, the mayor and the police have a duty to protect against hostile public,” Roorda says. “We don’t want a reward effect for disrupting someone else’s demonstration. So no matter how controversial, ridiculous or objectionable your opinion is, you can just say it. Action may be taken against a criminal statement, but only afterwards. That has everything to do with the censorship ban.”