How else are we supposed to get past our tribalism to cooperate equally as human beings? Common calls for forgiveness and moving on: "Hey, I’m extending my hand in love. Let’s forget about the past as much as we can and let’s move from where we are now. How can we help each other?"

You said: "individual biases and negative stereotypes (which we all hold)"...and...let's stop right there.

Everyone has individual biases and negative stereotypes. So, what do we do? Do we put those features that call these biases and stereotypes to mind front and center all the time? What is the consequence of that?

In the case of the people who are being negatively stereotyped, this provokes stereotype threat. It makes people self-conscious, anxious; it makes them underperform. (E.g. https://www.apa.org/topics/racism-bias-discrimination/stereotypes)

And when race is made more salient, the negative stereotypes of people who hold them can play out even more (E.g. https://commons.und.edu/cgi/viewcontent.cgi?article=3218&context=theses as one of many examples.)

And an expectation of or observation of reciprocity can positively influence people's intentions and attitudes (e.g. https://www.tandfonline.com/doi/abs/10.1080/15213269.2022.2078842?journalCode=hmep20).

So, these studies indicate that (1) getting past race is effective and (2) cooperation and reciprocity is effective. That's what Common's talking about.

So Common has a very reasonable point, whether he's studied it or not. Characterizing Common's viewpoint as "stupid ideas about race" is itself the stupid idea. Common's attitude might have flaws, but backed as it is with more than a little compelling evidence, one thing it isn't is just plain stupid. If it's wrong, it's wrong in an interesting way and deserves at least an argument, if not an argument coupled with compelling evidence.