The judicial system in any White dominated country (just about all, including African countries) will always favor the white population with leniency, but Black people will always be arrested. Mainly because it’s profitable for the prison industry, but secondly because of racial hate.
The bigger problem though, is the Black people in the courts, law enforcement and prisons share the same views as the White people. they have been taught that their people are bad and must be imprisoned. A Black cop will be much more aggressive with Black people because he is trying to prove his loyalty to his White master. Similarly Black attorneys and judges will be mean and unforgiving when handling Black defendants.
The White man looks out for his own and always shows leniency, and that’s what make them dominant.