21 at a underage drinking party?

Take the video to an attorney to look at. Cops cannot use excessive force and if your arm is broken then yes, you can sue the city who employes the cop and the cop. Almost 1 billion dollars was paid out to victims of police abuse last year so yes, you can sue and win.

Some cops just have a "i have a gun and a badge, I can do what I want" mentality and they need to be held accountable for their actions. Never give permission for a cop to search you, your car or home without a warrant. This is your right and a right not exercised is a right soon lost.

Always use your phone to record any encounter with the police. You never know when they will violate your rights and you will need proof to prove it. Look up Reasonable Suspicion and Probable Cause.

These are two very important things to know anytime you are stopped by a cop. This is what gives them them power to search you and or your car or home. If you know your rights you can defend yourself from aggressive cops abusing their power.

I hope you do sue and win. Go for it.

1 you don't get pulled over for no reason you were doing something that got their attention your passenger videoing your ride may have triggered this 2 you are obviously unfamiliar with the laws regarding possession of things in a vehicle technically the driver is in possession of anything in the vehicle not on the person of a passenger Period so you were in possession of a firearm 3 you probably were resisting because they only use the level of force necessary video of the arrest might impress the judge and it might not it is up to him not you your opinion does not count 4 you say nothing of your father if he has a record that could explain why you were pulled over for example if he has a record as a drug dealer and the police ran the plates it might look like a couple of mules transferring drugs for a known dealer 5 jurisdiction means a lot regarding the firearm as it amounts to a concealed weapon if you do not have a concealed weapon permit in a state that is required you are in deep trouble good luck get a lawyer.