Use the laws when convenient, ignore them when they are not. Our politicians do it very well.
Edit: Also I'm speaking more from the perspective of.. I would never initiate such violence, but if it were attempted on myself.. then I'm okay meeting violence with violence to defend myself. Or if people are committing violent acts against an innocent, I'm fine with violence as a deterrent also. The thing I hate is when people create rationales for certain types of violence, then say "wait you can't commit violence back"!