When you consider the time pressure involved with putting out a weekly series, I think it's easy to see how a series of ill-considered decisions can pile up into a big mess. The episode was simply terrible and just about any derogatory adjective you want to put on it fits. That said, there is a difference between being deliberately racist and putting out a product that ended up looking that way. (I hope that makes sense) I would be this one one of those times when somewhere during the shoot someone said "oh shit"...but by then it would be too late.