No, it's not based on that. It was based on a false rumor that spread on social media that the perpetrator of a recent triple murder was a Muslim asylum seeker

No, it's not based on that. It was based on a false rumor that spread on social media that the perpetrator of a recent triple murder was a Muslim asylum seeker. It turns out that the perpetrator is a British citizen who was born in Britain and is Christian. What this reminds me of are pogroms in Eastern Europe, which were often sparked by false rumors about Jews.