The fence is to keep illegal aliens out, not persons of any particular race. Your thread title not quite accurate.

I don't care if they're little green men from Mars. Didn't fill out the paperwork and get a visa? Stay out.

__________________
“The only thing necessary for the triumph of evil is for good men to do nothing” - Edmund Burke

So in the Libyan fable it is told
That once an eagle, stricken with a dart,
Said, when he saw the fashion of the shaft,
“With our own feathers, not by others’ hands,
Are we now smitten.” Æschylus