And keep making more extreme demands until the answer's "no".
Racist Twat: We want to fly a big balloon of Sadiq Khan outside Parliament
Mayor's office: Er, OK...not much we can do to stop you there.
RT: Oh. Well, we're going to have him wearing a yellow bikini.
MO: Hmm. Well, it's not actually obscene, and parody and satire are perfectly acceptable forms of expression. Go ahead.
RT: Oh. Fuck. Well, we're going to write rude Arabic words over it and make them look like body hair.
MO: Well, you know, so long as they don't breach any obscenity laws, fill yer boots.
RT: Jesus Christ, OK, well, we're going to give him a big dangly cock and balls.
MO: I don't suppose anyone will notice it at that altitude.
RT: Look, you twats, just WHAT THE FUCK DO WE HAVE TO DO to get you to refuse us permission to fly this fucking thing?
MO: *shrug*