This is the gunpowder; the spark is migration. The UK left the EU because of migration.
Global migration, at its highest levels since 1945 and which we all know is part of globalisation and the political implosion of the Middle East, is the ticking time bomb of the 21st century. UK and European politicians have failed miserably in addressing it both in terms of communicating with people and addressing their fears and at the practical level of setting sensible policies and ensuring competent control of the borders. It is not racist to ask to discuss the issue of migration and to ask to debate whether multiculturalism is good or bad and to ask what the fiscal cost is.