Ignorance is no defence

So, this is another sorry tale that Brexit has brought up. And if you confront the half of the population that have contributed to this, many will insist they didn't know this would occur, because being an idiot is better than being evil. Now, what historical parallels can a culture brought up obsessively with a war fought more than 70 years ago conjure up, I wonder?
Just disown all Brexiteers. It may do the country harm in the short term, but I want to kick them when they're down. And kick them again. It worked for the Germans.