They’re right. Black man kills white men is far too common an occurrence to be significant news. It’s “dog bites man” sort of story. Flip it around and it would be news though! And they’d have interviews with dozens of black people who suddenly “feel scared” that a random white person will murder them.
There was another posting about this, but I can't find it.
He does seem to have been wearing such a shirt, and murdered three white people out of pure racism.
NYT / Wapo / NPR / CNN all did not think it was significant enough to cover the story.