Memes of Production

This one is a bit of a stretch I think, mostly became of the "racism gets it's power from capitalism" part. The power of racism comes from the power of racist people. Capitalism tends to concentrate power in the hands of a few individuals. Thus, if those people happen to be racist towards some group, they'll push the society they exist within in that direction. However, people still have power under any economic system, what changes is who has more of it, how they come by it, and what the relative distribution of that power looks like. Even in a hypothetical system that gave each person within exactly equal power, of whatever other source you can think of- if a large part of that society were to hold bigoted views, then their actions would still be harmful towards whatever group they were bigoted against, and thus racism would still exist.

That isnt to say that capitalism is entirely irrelevant to this, those at the top of a capitalist system effectively determine who is targeted or privileged at the moment and so them losing power should at least change how and by whom racism is experienced- but it wouldn't end it, because prejudice and tribalism run deeper than economic systems and wont disappear just by changing around who owns what.

That being said, a more fair economic system shouldn't make racism any worse, and it should help numerous other problems, so this doesn't change the conclusion that capitalism needs to go, I just think this problem (racism) is a harder one to fix than that.