In some aspects, yes.
In China they could be. Not here. (Institutional, before anyone gets feisty over definitions) Racism necessitates structural power. Whites are the only social group that hold any of this power in the US and majority of Western nations. Therefore, no minorities cannot be racist. Prejudice and racism are not one and the same.
Racism is SIGNIFICANTLY more dangerous.
As far as affirmative action being "reverse discrimination towards white people..."
You know who the #1 beneficiary of AA happens to be?
White women.
Whites haven't had to deal with centuries of disenfranchisement like blacks in America did. Whites didn't find themselves on the short side of homestead acts, they didn't find themselves facing employment discrimination based on the color of their skin, they didn't have a lack of material wealth to hand down through the generations, etc.
Affirmative action is meant to bridge the gap that white privilege created - not to coddle white feelings