I dunno; did their black friends get offered better seats?
Nobody was offered a "better" seat. Fewer first class seats were available on this plane and people were bumped to coach. One of those people happened to be a black woman. Now how the choice to bump passengers was made isn't clear, but I'm fairly certain that there is a ranking the separates people who upgraded using point's or miles and people who paid for the seat outright. Regardless, she gets bumped and her friend doesn't, ... we don't know why. So far, I don't see anything racist.
The woman who was bumped to coach is assigned a seat at the back of the plane. Some people seems to thing this is racist and have drawn comparisons with buses in the 50's that had a section for black passengers at the back. I can see how this may be interpreted as racist but I find it unlikely as it was probably automated.
The passenger that was bumped asks whether she can wait at the front of the plane until boarding is complete to see whether all of the first class passengers actually turn up or not. She's refused and asked to take her seat. I don't see a problem with her request, but I also don't see a problem with the response either. What we don't know is the tone that either party was using during this discussion. Airline staff can be super shitty and passengers can be super shitty. So far, probably not racism.
At some point it becomes clear that people in the front coach row or rows didn't show so she moves to take one of those seat and her friend moves from first class to join her. The white friend describes the staff as being confused as to why she would leave first class, but we don't know much else. She, or they, are told that there is plenty of room in that row because people didn't show so they can spread out. It sounds like they were sat in connecting seats in a row of 4 so there was still at least 2 empty seats in that row. Now even if I was travelling with my girlfriend, if there was 4 free seats you can be sure that I would move over and "spread out". The insinuation appears to be that the white women might want to move away from black woman, and again, I can see how it could be interpreted that way but it could easily not be.
People get bumped from first class all the time and airline staff are shitty all the time. Maybe this was racism, but maybe it wasn't. I wasn't there and we have only anecdotal evidence from the two women. I learned long ago not to take things at face value and to continually ask questions. Let's see what American does or whether anybody comes forward to corroborate it. We've had plenty of shitty airline stories in recent months which lends credence to the belief that airline staff are shitty, but few of those stories have involved black people. Airline staff can be shitty to black people with it being racism.