Some people are not considered "innocent until proven guilty in a court of law". That is what I find unjust. I can accept focusing on "high-risk groups" (although one should question how this definition of a high-risk group is constructed), monitoring them, and trying them in court. What is unjust is punishing them without a fair trial.

You're making very strong allegations towards a group of humans solely based on their ethnicity or religion.

Nope. I have made no 'allegations'.

Then what are you implying by your third question?