Blackrock used to be pretty wild-west (I was going before Burning Man started), pretty scary stuff at times (a friend once did something silly and hurt himself badly, Clinton was doing something in Reno, the SS heard about it, thought it was nearby and MiB showed up looking hot and bothered in their suits), over time the BLM realised that they needed to police the area a bit more and things got toned down (doesn't help that BM situates itself across multiple law enforcement jurisdictions, these days there's a surfeit of police)