No, it’s not racism. As I explained, it’s a human thing, whether it’s profession, sex, race, whatever. You do not and cannot have the same experiences as blacks or women or combat veterans unless you are a part of the particular group in question.
Once you grasp that you literally cannot know the experience they have had, then you should at least have the courtesy to understand that there are things that they will say to each other that you can’t truly understand as they do.
Likewise, no black or woman can know how it feels to be a white man.
That being said, sure, you have your First Amendment right to say what you will…but while that may provide you legal protection, it does not provide you social protection.