I have no problem with them going around putting money in expired meters as their own personal "fuck you" to the parking enforcement and the city, but this is where it goes over the line from good/wonderful to bad for me:

The suit accuses Cleaveland and five others of videotaping, taunting and intimidating its parking meter personnel.

The alleged behavior includes chasing officers on bicycles, shouting insults and accusing them of stealing people’s money. One officer became so stressed that he complained of heart palpitations and began having nightmares about the group, according to court papers.
You go from doing something good for your fellow citizens to being a bunch of punks and thugs.