I'm not a woc, but from my perspective I think being offended the advert is maybe a bit much. The man in the video went viral dancing to a song called "it's Friday then", so they're reffering to the fact it's Friday not that he is black.
Hmmmmm.
It’s Black Friday.... and they are using a black man to promote it. They wouldn’t have used that clip if he had been a white guy would they?
Poor form on ASOS behalf in my opinion.