I see your irony, but that's actually a specific case of a more general rule. Not speaking the predominant language of the place you live in will make your life more difficult and cut you off from the people and culture around you. It doesn't take much to see it as a precursor to crime, statistically speaking of course.

>> that is racist.

> speaking [...] not English which predisposes one to crime.

Even in jest, this perpetuates the view that unless they speak English in one's presence they should be viewed as having a propensity to crime.

edit: /s fail. toned down the personal.