Sounds like you have already gone to juvenile court and have a lawyer whether it is a private one or public defender. You should be discussing your case with your lawyer and not post facts here since it is a public forum. Juvenile proceedings are different from adult court. Factors considered are past conduct (prior law enforcement contact and juvenile proceedings), how you are doing in school (including grades problems at school and attendance), problems at home like not listening to your parents and not being home when you are supposed to. If this is a first time offense, there are various ways to resolve your case without major impacts for your future. You need to talk to your attorney if you have one to discuss various options. If your issue is the conduct of the officers that may be a civil rights issue although I am not sure if you can find a civil rights attorney to take your case. Bottom line is that you should talk and discuss your case with your attorney.
Don't make any statements about this incident to anyone other than your attorney.
DS Criminal Law Group
515 South Flower Street
Los Angeles, CA 90071