"Special use permits" used to silence anti-illegal immigration protesters
Russ Dove is a fringey Tucson anti-illegal immigration protester. He was trying to use a bullhorn to counter-protest an illegal immigration march, when Tucson police told him that the noise was bothering someone else and that he'd be arrested if he didn't stop using the bullhorn. Apparently this involves the type of permit the marchers received. More here; see the long video here; background from the other side here.
I don't know whether his First Amendment rights have been violated or not, but I certainly don't expect the ACLU or the MSM to look into it either.