The Brits have bad PR, that's all.

You've got a guy out here who once had the idea of using miniguns loaded with plastic training ammo for riot work, mounted on vehicles. It's not technically an automatic weapon, but six lever actions operating together, so it doesn't get picky about ammo. And throttled back to a cyclic rate of about 2000rpm, it get's the crowds attention and sends the message that this is not a healthy place to be. Particularly if you are skipping those plastic trainers into thier legs and bellies for ten seconds per gun at that rate.

That, and helicopter down blast. If you can get a bird in there, that will make a big impression.

*tries to look innocent* I wouldn't know this individual personally or anything.