Um... a lot of people do. Unless you live on, or near, a university campus where enforcement of noise requirements are loose, you can't just crank up the music as loud as you wish, and bothering all your neighbors.
My only problem with this is you both have passed judgment without knowing anything. We have a video that doesn't tell the entire story. We don't know what was said, or what anyone was told, or how anyone reacted. In short, none of us were there. Yet both of you have determined you know everything already, and obviously know exactly what happened and clearly the police were wrong.
Whatever happened to innocent until proven guilty? Or do policies officers not have that privilege?