It’s entirely possible to be genuinely anti-racist on an cognitive level, and conditioned with racial bias on a subconscious level. That explains why no one, not even the KKK, think they are “racist”.
I find it useful to start from the presupposition that as a product of my culture, any problematic aspects of my culture have been conditioned into me. I think it has more utility to own these problems and work with them than to just intellectually reject them.