"This problem [immigration] isn't going to go away. With #climatechange and emergencies, there's going to be huge population shifts in the decades to come, and the idea that we can be Fortress Britain and Fortress Europe is for the birds. We need international cooperation to deal with what are going to be seismic shifts in a mature way that puts humanity at its heart rather than dumbing down to the most reactionary politics available" - Mark Serwotka #BbcQuestionTime