"Citizen-saboteur." I like the sound of that.

simplesabotage.bmp (image) via kwout

Via BoingBoing: Simple Sabotage Field Manual. The CIA's 1944 guide to sabotage. "Sabotage varies from highly technical coup de main acts that require detailed planning and the use of specially-trained operatives, to innumerable simple acts which the ordinary individual citizen-saboteur can perform."