Amateur Radio - using a FM VHF radio repeater, the repeater owner owns the equipment - hence if there is a problem, the repeater owner can ban the user, report the offender to the ARRL and inform the FCC and ask for relief.
On the HF Bands no one owns any frequency - so as long as you don't talk about sexual acts or private personal body parts, it really is not against the law to talk, since the information on the frequency is not disseminated for use by the general public.
The FCC could spend hundreds of thousands of dollars to catch these people , but the fines are never paid or collected and lenient judges usually lets them off with not much more than a warning, so the 'fcc doesn't care one way or the other.
The Offenders are usually X cb radio people that at one time got a license but never had a use for it so they degraded to the point of where they returned to where they came from, just on a different frequency. 40 meters daytime probably gives you the biggest bang for the buck!
If you don't like what they are doing and you find their actions offensive, then go to their house, cut their coax, tear down their antenna and kick their ass..
Me personally, I just turn the big knob. You Can't Fix Stupid!