Well, I don't believe that any such racist actions exist.
But here is one many thought to be racist: A white person calling a black person a "gorilla" without disliking blacks, believing that they are inferior, or essentializing characteristics to them. Said white person claimed that there was no intent of the kind I mentioned.
I find that hard to believe. If I don't like a black person, I wouldn't call them a gorilla. If I think she's a really bitch, nasty person, I will call her just that.
You don't have to be racist to all people in that race to be a racist towards a particular person.
Some people may be fine with other races as long as they still in their place etc... There's different kinds of racism.
On a micro level, that's entirely possible. Calling large, clumsy people "apes" or "gorillas" is not uncommon. (You can find old films from the '30s and '40s where white "heavies" are called gorillas or big apes routinely). So it is possible a person could refer to a large, clumsy black person as a "big ape" without being aware of the history, esp. in the U.S., of cartoons and racist propaganda comparing blacks to apes, claiming that blacks are less evolved and literally more apelike than whites, etc.
In discourse on this forum, and maybe because of my background and position, I am always more prepared to ascribe perceived prejudice or racism regardless of whom it is targeted at as the product of ignorance and misunderstanding than of ill-intent. Sadly, I am sometimes proven wrong. But there have been times when I think I've been proven right as well.
On the macro level, I think LBV is doing a pretty good job of explaining it, although I would argue that in certain conditions racism can break down along other lines--certainly, the bias against Jews, or the bias against the Han under the Manchus, etc. are historic examples of ethnically based "racism" that closely parallel the situation he is describing.