I don't think that's what bunny's trying to say...she's just saying it's a subject she doesn't bring up with her particular friends, not all whites in general. Does not wanting to discuss various racism issues you experience on a regular basis with someone outside your ethnicity necessarily make that person racist?
Some of my friends, regardless of ethnicity or background, I'd feel comfortable discussing certain issues perfectly fine. Others, it's not something I would necessarily bring up. That goes for all topics - not just matters of race but politics, gender issues, religion, etc. Naturally, some topics are easier to discuss with others if they've shared similar life experiences. Others are, again naturally, harder to discuss if someone has no shared experiences.