Which existed even when cops were the ones making the arrests.
For those who do go to trial, the right to a lawyer is often pretty weak support. Public defenders are grossly underfunded and overworked, and there is no guarantee that they will be competent or committed to the case.
A jury of ones 'peers' is rarely the case either. Yes, they are citizens, but they are rarely of the same background, ethnicity, or social status. They are hand selected by lawyers to remove people that might be sympathetic to your plight.
I've never heard that jurors are the best and brightest among us. Often the highly educated and analytical are removed from jury pool.