Trump realizing that the shooter in Washington D. C. was Afghan, and then immediately moving to deport everyone from what Trump calls "third world countries", is a sad example of how the racist mind works.
It is the equivalent of deporting everyone named Brian, if one guy named Brian murdered someone.
I hope Trump does not notice, the murderer has black hair, because 85 percent of the US population has it, and that is a lot of deportations.