If you watch the whole clip, all six minutes of it, the presenter does say that the same group were doing the same routine 20 years ago, and they show a clip.
I thought that was astonishing as well - that no one on the production team thought hang on a minute, what might have been 'funny' 20 years ago perhaps is no longer acceptable in this day and age.
How did it get past a whole production team?
Are they all so racist and backward that not one of them thought to say, Hey, guys, this is the year 2009, maybe this isn't a good idea?