"...Because being under-educated or coming from a non-English speaking background are not signs of criminality.
Thinking that they are might be, though..."
Are you saying my thoughts are criminal?
There's no such thing as criminal thoughts. But some attitudes suggest the possibility of criminal behavior.
When I see a person (or group of people: it's often a pack-mentality thing) who appears predisposed to act in a hostile way toward myself or another person on the basis of superficial differences, I go on alert.
I have experienced racial prejudice myself while travelling in other countries and I have seen that this prejudice will make others more likely to try to rob or assault or exploit me. If I see you behaving in a similarly prejudicial way toward someone in my community, then I will be on alert against you, too.
Prejudicial behavior includes:
1) Manifesting an overtly "vigilant" attitude in respect to the other person when what sets them apart is their skin color or accent or familiarity with English
2) Refusing to extend to them (on the same basis) the courtesies and civilities you are openly extending to others around you
3) Making it clear to them that they are being watched by you
4) Muttering and pointing at them
5) Making jokes at their expense
6) Doing nothing to hide your disdain
7) Doing anything else that makes the person feel uncomfortable to the point where they choose to leave
If I see someone behaving this way, I WILL be on alert.
Think of it as a kind of "Who's watching the watchmen?" thing. Just because you wear a gun and a white hat doesn't mean I have to trust you or respect your judgment.