To some degree, we probably are. We all grow up steeped in the prejudices that surround us, which vary in scope and degree based on culture and circumstances. The best we can do is to try to be aware of how this colors our impressions of people, and be ready to override it with the reality of who that person is as we see them in action and get to know them.
I know it could be a bit ivory tower academic but I think people can be racialist, and honestly it doesnt matter, at least I dont think it matters.
Racism is when that racialism has power mixed in and people can then exercise partiality or oppression on the basis of that racialism.
That can be a thug who takes a dislike to you because of your skin tone and is bigger and stronger than you and willing to become violent or some CEO deciding whether or not they are that worried about their products having terrible health consequences for consumers on the basis of what market they are selling to primarily.
Anyway, I do honestly think that the majority of conflict globally is still class war, and I think it always will be. A lot of "racism for the masses" is an exercise in duping populations and diverting them from questions about the distribution of wealth. Also if you tell someone all that matters in life is their skin tone you are going to underdevelop that population, why strive for anything when you feel some sort of entitlement based on who you actually are. It works in ways to pacify populations, exercise social control, while you can keep on making money.
However, its not lost on me that there are huge legacies which, ultimately, are individuals and families, the appeal of toxic racialism can appeal to them as much as anyone else and I think it does. Its at this point that you have the racialism plus power dynamic entering into things big style. This is a thing and its a different thing, I think, to historic wealth and power built on past racism. This "contemporaneous" racism I think flares up from time to time and reflects a bunch of things, the same as left wing conflict or insight surges, like demography, maturation, even boredom stuff like that.