Because only white people should decide what is and is not "racism.".@margbrennan : "This is being perceived as racist, do you understand why?"— Zeke Miller (@ZekeJMiller) July 28, 2019
Mulvaney: "I understand why but that doesn't mean that it's racist. The president is pushing back against what he sees as wrong. It's how he's done in the past and he'll continue to do in the future."
It's all about the power of definition. Which is to say, it's all about power; and white people like Trump and Mulvaney aren't about to give that up.