Chances are they are more likely than not going to be militant black panthers, not silly self righteous overgrown school monitor citizens.
These people have a chip against society and harbor deadly hatred towards mainstream whites. I do not see these people being easy to deal with.
I disagree. To be really effective, the security force must blend in with the general population. Your child's teacher at school; a coworker; mailman; these are ones you will have to be careful of. They won't come after you themselves, they will report you to the police who will do the violent stuff.