Help Police Misconduct?

i was involved in a situation where i believe the cops overtook their authority. i dropped off my friend from school because we carpool. Next minute a cop came and almost rammed his car into me. He came out with a gun in front of my car ready to shoot yelling to put our hands up he called back up a swarm of cops came out and they all had their guns pointed and me and my friend. we were handcuffed and they checked my car without permission or search warrant. They told me the reason they did that was because earlier that day a black Honda civic was stolen in that area. And i was driving a black Honda civic. OMG how many people have black Honda civics. I felt what they did was wrong and they could have just pulled me over and asked for license and registration papers.The officers didnt even apoligize fo CAN I REPORT THIS i dont know what exactly i can do. I wan legal HELP