Bizarre racism

So Jo and I are walking down my street to my car and two black girls are in front of us talking about getting into an apartment by fumbling for keys and then hoping someone lets them in. At some point, one girl says something about "white girls." She turned around to us and said "Sorry, no offense to you girls." We smiled and we all keep walking down the street.

Then, at the corner, she turns around and says "I feel like I need to justify that comment. It's not like I am racist. It's just... I don't know... like you're the police." What?

If I would have said something like that, I would have gotten punched in the face.