>When is it ok for me to be prejudice towards a group of people?
When a group acts as a coordinated group. A political party for instance. This is not rocket science. You must link the individual(s) directly to the act, or you’re just stereotyping and making assumptions.
You are asking a lot of baiting questions. We know this isn't an attempt at dialogue, so just state your mind and be done with it instead of continuing of this silly bread crumb game man.