A Google search indicates it has something to do with cellular biology and cancer.
I think or perhaps hope that society is self-correcting I think of it like a PID loop that is not properly tuned. There will be overshoots and undershoots, but progress is made over time. Race relations are better now than they were in the 1960s, which were a whole lot better than the 1860s. I see the playing of the black national anthem before the national anthem at a sporting event dominated by black athletes as progress over athletes kneeling for the national anthem. I think it promotes unity and I don't think it is necessarily a slippery slope.