race-baiting
noun [ U ]
mainly US disapproving (also race baiting) uk ​ /ˈreɪs ˌbeɪ.tɪŋ/ us ​ /ˈreɪs ˌbeɪ.t̬ɪŋ/
​

the act of intentionally encouraging racism or anger about issues relating to race, often to get a political advantage:
They resort to scaremongering and race-baiting about alleged ballot-rigging.
Subtle race baiting remains a part of US politics.

(Cambridge English Dictionary)

Here's a good indication of what Mitch was doing, what he's so good at - speaking a nominal truth but in a snide, disingenuous way:

'McConnell snidely used the report to declare common ground with Obama.

“You know, I find myself once again in the same position as President Obama,” McConnell said at a press conference. “We both oppose reparations, and we both are the descendants of slaveholders.” '

(HuffPost)

Mitch is way more subtle than you are, TW...