I think my issue would be that I’m all for discussions about Islam, anti-semitism and so on, but I really think starting from the likes of Tommy Robinson’s views is a bad way of opening that up. People of that ilk really don’t appear to be interested in a discussion, rather they’re interested in getting across a polemic having made up their minds years ago.
edit - to be clear, not trying to tell you how to think; your experiences are almost certainly more valid than mine in this arena. Merely explaining why I personallybelieve that giving people with those views completely free reign is not beneficial.