F*** the police. There's a special place in hell for these murderous pigs.
You're not going to get people on your side with crap like this. Your reaction is immature and against everything we've learned about the success of civil rights movements.
The legal system sure hasn't worked. They always get away with it, and when you try to film them, they beat you and smash your camera. You file a complaint, they don't even investigate and clear the cop of all wrongdoing. A cop kills an innocent unarmed civilian, they don't even press charges. What's left but to say? A cop here died in a traffic accident and 1000 people showed up for his funeral. Yet hundreds and hundreds of people are killed by the very people who are supposed to be there to protect them, and nobody bats an eye.
They all have a power trip, an ego. Most of them only got into that job just so that they could have power over people, and that's what gets people killed. What's left to say besides "F*** the police?"