There are lines that no one should cross. A pilot should never cross a picket line. Ever. ALPA should have never taken any of their asses back either. Never. That is no justification however for other pilots to break the law. You want to refuse a jumpseat, show them the cold shoulder, confront the person and give them a piece of your mind, embarrass them in front of other crew, ignore them on an over night, etc. Fine. But once you decide to tamper with someone's food or drink, damage their car, follow them home, or harass their family, you have now crossed the line of human decency and that sort of behavior can and will land your ass in jail. Those are criminal activities. That is not anything to be proud of or to encourage. Ever. You want to jeopardize your career for that kind of behavior? Seriously? Be the professional that you are supposed to be modeling.