"I guessing you don't live in Los Angeles we are poor black foke living in bad neighborhood no one listen us there ain't justice here for us they pick my friend up for no reason he ain't even git priars" - you are correct I have no experience of LA etc but they still have a process, it does not matter what the cops say, do, or ignore. In the end the case must go before a judge and jury and they will have to present some evidence and refute any alibi. Ok I get it that there may indeed be racism and other issues at play here but the fact is that in order for your friend to be convicted it will take more than the police falsifying evidence. Your friend should get an attorney, even the one they appoint if he cannot afford his own and he will, by law ask for the evidence they will present at trail, if what you say is true then any lawyers should make mincemeat of their case and it wont get anywhere near a court. This is UK and things are slightly different but the US system has the same basic principles.