I am not recommending this, but a likely guerilla warfare scenario would be for someone to break the mercury bulbs in parks, and other places the enviro nuts value.
In front of animal shelters and abortion clinics, in front of the ACLU, etc. It would be classic.
Again, I would never do this, nor would I recommend it.
They may have repealed that part of the Act. There has been a bill filed to do that, though I'm less certain of its status.