I don't deny the reports of poor detention conditions in some ICE detention facilities, which are concerning and need addressing. However, illegal border crossing is a crime in most countries, regardless of their demographics. "Brown" nations like Algeria are constantly under criticism from the UN and the IOM for their own immigration policies; they ditch illegal sub-Saharan immigrants into the burning hot desert with no food or water, but we can't consider them "white supremacists", not even right-wing, since they claim a socialist heritage.
This is a far more complicated issue that quick labels won't solve.