<human>: Can you condense the text into a few key points?

Example: One night my fraternity had a party with 200+ people. We had taken the appropriate measures to assure the police couldn't come inside, and there was security to make sure nothing got out of hand. The police were called and showed up to our party. They opened the gate without asking, and preceded to knock on the door. Since everyone was inside, we followed protocol and had our sober over 21 risk management chair step outside to talk to the police. When he opened the door, they pushed him out of the way knocking him to the ground and told everyone to get out. Keep in mind they had no search warrant or permission to come inside. They then proceed to usher everyone out and search the house for "drugs". there were no minor arrests, but they still arrested the house owner for providing alcohol to minors. The worst part is, they told everyone to drive home and get off of the property, meaning there were at the time at least 50 drunk drivers on the roads. I have heard multiple other horror stories as well, and have witnessed at least two other occasions in which the police clearly violated their power. I would really like to know how to stop this.
<bot>: police violated their power by barging in a house party without permission or a search warrant, and committed other breaches in standard protocol.