Starting with Obama and Trayvon Martin, and continuing through the George Floyd Riots and the summer of Black Lives Matter, it has become an article of faith among Democrats in particular, that the US suffers from what they call “systemic racism.”
The concept is often asserted, but rarely with evidence or documentation.
Ironically, much of this started just as the nation elected its first Black President, which on its face, would seem to disprove the theory. Rather than using his half-white/half-black origin, Obama went about making racial matters worse rather than using his position to make things better.