Are you saying they deserve injustice because of the colour of their skin or because, like whites, some engage in criminal activity and are opening themselves up to injustice because of this. ALL lives matter regardless of race, religion, skin colour etc,
Well, consider the fact that in the 1930s many Britons thought (along with many Europeans) that Jewish lives didn’t matter, and that THEY deserved all they got.
Yes, all lives do matter but then it still seems that some don't.
Whether a criminal or not, you should not expect death to be a result of your arrest. That aside, discrimination still occurs in many ways and in many areas including within the police force, whether you are a law abiding citizen or not.