I remember watching a documentary about Syrian and Iraqi refugees trying to immigrate to the baltic states. The documentary talked about the effort to try to reduce the stigma of "middle east man terrorist" for the refugees because the stigma alone contributed to the mutual resentment of these people. To be clear, the doc purported that being exposed to the stigma actually encouraged violence and primed jihad-sympathy among the Islamic refugees.

All this is to say that if you treat people like hateful bigots, they're likely to become hateful bigots. This overreaction seems to have the potential to do harm than good.