It was an FE college, the students would be from 16 to 60. I think it's quite wrong to sack people on the basis of their private beliefs actually. Almost .... fascist.
As it happens I spent six hours a week with him for a year, and I didn't get any inkling of any sort of racism. And I got very well with him too, I got an A for all my essays and would sometimes bump into him and have a chat. He easily could have tried to 'groom' me for far right politics - I probably made it clear that I was right-wing rather than a lefty - so the opportunity was there (not that I would have been interested), but he didn't. He stuck strictly to 'safe' subjects. He doesn't come across in the video in the least bit fascist does he? But he has done a huge amount of far right stuff, marches, writing manifestos, etc.
I do remember the line about the famous Belgians though, I think he must have told that one a hundred times.