The point is that you do not experience racism the same way at all because there is no system of racism against you nor is there the weight of hundreds of years of systemic racism against you.

If I call you a cracker right now it means nothing to you. It doesn't affect you one bit. It rolls off you like water because it's just funny to you. It has none of the history. It has none of the weight. You haven't been oppressed for your skin colour one single bit in your entire life. You can be called a cracker a hundred times and it causes not even one emotional ripple within you because it isn't racist. You sincerely do not experience racism as a force, not even one tiny bit, and that is why none of it affects you.

We'd have to get into some extreme cases of actual physical harm before we get close to actual racism committed by black people against white people. But even in those cases I would argue it isn't racism, it's the uneducated bubbling of anger expressed by the oppressed against their oppressor in ways that only occurs that way due to a lack of education on how to explain their rage in linguistic ways that do not appear as racism. Take the Palestinian for example, an uneducated Palestinian without the social teaching of phrasing and language that frames their struggle as oppressed vs oppressor, as Palestinian vs the Zionist, would likely default to jew-hate. But would it actually be that or would their rage still fundamentally be just an expression of their oppression without the linguistic framework that provides positive PR over negative PR?

What is accused of being racism by black people against white people is typically just the same. An expression of oppression without the linguistic framework or education to make it palatable to liberals.

But this is part of white privilege: white people can not be subjected to racism for being white. That's half the point.