Wow, didn't know that the police, judges, and juries were all conservatives! Brilliant.
Do I think that the poor and minorities are jailed disproportionately? Yes. A huge part is money, thus lawyers. Another part is the cultures of the accused and the system, they are different. Those with money are more likely to follow the same behaviors, language patterns of those in the system. The argument that, 'this could be your son, your daughter, have mercy...' works.
Something needs to be done about it on that we agree, to blame a political philosophy though is nonsense.