Everybody knows Jesus wasn't white. "White conservatives" know he wasn't white, so do Ugandan Catholics who depict him as black even though he wouldn't have looked that way either, or Chinese Christians who depict him as Chinese even though he wouldn't have looked like that either, or Russian Christians who depict him as Slavic even though he wouldn't have looked like that either, so on and so forth.

It's a universal religion, so the iconography blooms in a universal way as well. Let's not get all obnoxiously Twitter about it & pretend that this is somehow something unique to the whites.