Political Correctness says: Don't judge - don't be prejudiced.
Christianity says: Judge everything, superficial or deep - because everything is tending either to the good or to the bad.
Christianity says: Be prejudiced about everything - because your attitude to good and bad things must be different.
Only, be prepared to revise your judgements or prejudices in light of further developments. You must judge and be prejudiced, but as a fallen Man these will err.
Only God knows justice and the truth - but we must judge as best we can, guess the nature of things as best we can - grow to be like God as best we can.