Hilary, Did you also see Muslims in Europe, parts 1,2 of 4. They were listed on rhs on YouTube when I followed your link. It's all quite scary stuff! I hadn't been aware of Sweden being involved. I just put a longer answer in reply to Jane W in a discussion about BREXIT and T May, suggesting we think how all this has been slowly creeping up on Europe and USA with various, disasters, bombings, shootings, ,disappearing planes et al! Much of it according to follow up news, interviews, documentaries etc., carried out bŷ non white Europeans! Not everyone carries their faith on their sleeves for open observation. However it is now people of other faiths being openly targeted. All this does go much much deeper than ordinary people are giving credit for, except perhaps the several worldwide Security Agencies. France & Germany have their own elections next year, so wonder what that will bring. I think we will see a faster rise of people or groups who are openly anti Muslim/Immigration.
I also believe it is essential Teresa May does not trigger Article 50.