Populist agitation

"Of course, it’s not just about immigration. A wonderful alliance, which I have long hoped for, has been forged in this campaign."
"We have had only half a revolution. If we do not now complete it, we will have missed an unequalled opportunity to reclaim what is and always was ours."
http://hitchensblog.mailonsunday.co.uk

I notice populist agitation in Peter Hitchens' comment.
I did not know that immigration was the most important issue for those who wished to exit from the EU. Did they also want a great, great wall somewhere between their villages and London?