You didn't give any information OP for those of us who haven't seen the programme, so my post is apropos of the posts that followed in trying to get the gist of the content.
I don't think you can pick any one country in isolation and say that it's any worse as far as racism, xenephobia and extreme nationalism is concerned. there are elements of all of those not only in Europe but the entire world. Turning to Europe though, the Eastern bloc are very upfront in it's nationalism which imo is more reminiscent of Germany in the 30s than here. For example Victor Orban of Hungary has made it clear that he intends to keep his country very white and very Christian, contrary to EU directives and ethos. Meanwhile, many western EU countries are putting measures in place to ban the burka, including liberal Denmark. I don't see any such moves afoot in this country, in fact I can't see that happening, but I'd never say never. France particularly can be quite confrontational and draconian in pursuing such policies. I felt the incident on the beach last summer where police told a Muslim woman she shouldn't have been covered up to the extent that she was , leggings and a kaftan top, didn't do them any favours. Neither will France tolerate the burkini. Our black footballers don't get a warm welcome in quite a few European countries, particularly Eastern Europe and have been greeted at times with pathetic monkey noises from the crowd.
The incident of the attack on the Polish man in Essex soon after Brexit and conflated with the referendum, appalled most people, but it emerged later there was a background to that story. The man who died had had a drink or two and was shouting at some local boys, one of whom was black or mixed race but his comments were of a racist nature and a fight ensued in retaliation to his slurs, unfortunately he was knocked to the ground and suffered a fatal injury. That wasn't how it was reported though and we had Jean Claude Junker et al berating Britain because this fitted in very well to the negativity of the British character apropos of Brexit.
I can't comment on the programme because I haven't seen it, I don't doubt racism exists here, but it exists everywhere, unfortunately it's a negative of the human condition. It exists not only in the context of a black and white racial/religious equation but in all manner of ethnicities, for example black people have their own dislikes of other black cultures and act on those animosities in more extreme ways than casting racial slurs.