After viewing the GGM vid at the link you posted in the WA thread, I watched some others on Youtube like the bloopers, 'arranged shag' and 'gay son' episodes. Funny stuff. Is it a current show? Just wondering, because here in North America there is often excessive concern about political correctness.
It was aired some 10 years back to great acclaim.
The various members have gone on to bigger things.
They got away with it because they not only acted in the series but wrote it too. No-one in their right mind is going to accuse someone from an ethnic minority of being racist
But there were serious points being made under the comedy.