Your chance of having your rights abused in some manner by law enforcement is in all likelihood greater than your chance of having to fire your weapon in self defense.
The violations my vary, I know as a teenager we got hassled regularly by the police trying to catch us drinking, with drugs or having sex. The number of 4th amendment violations would have been staggering if any of that was ever challenged in court.
During these stops or contacts some kids would make smart remarks, and fairly often get roughed up for it. That right there is abuse. Just like no matter what someone says you can't use that as justification of lethal force (even a threat has to be accompanied by means and jeopardy, ergo not just stating intent but in some manner acting upon carrying it out) it is also not justification for assault.
One of the funniest moments of that time I had got pulled over for speeding (which I was), and during the stop the state trooper thought he had spotted a bag of weed in the glove box of my dad's car. My friend that was with me saw it too, and pointed it out when the officer asked to see "that bag". Well what he was pointing at was a couple screws that were covered in grease wrapped in cellophane from some part of the car my dad had saved to fix or something. I, knowing what the "bag" was thought he must have been referring to something else, saw my friend's leather jacket he had dropped on the floor when he got in - it looked like an old duffle bag. So I reached over and picked it up. The offcer goes "No, that one" pointing to the glove box door that had the contents partly on it after I'd fished out the registration and insurance ID. So I picked it up and gave it to him. He hastily unravels it into his hand and the look on his face was priceless as for a full 5 seconds he started at 2 screws covered in black axle grease laying on his hand.
My friend was trying not to kill himself laughing (was more like choking trying not to), the cop was getting redder by the second. He stuffed the screws back into the cellophane, dropped it on the glove box door and said "Drive slower" and retreated back to his car holding his greasy hand away from his uniform. Now had my friend started actually laughing, or I made some smart remarks we may well have wound up with some serious injuries that day. Lots of other kids did for just that reason. Fortunately we refrained and I got out of a ticket as the cop probably didn't want the story of the greasy screws being retold in court.
