I wish mcem, but I'm not optimistic. I don't know.
Sorry to return to Nazi Germany, but I do remember seeing a "lightbulb moment". When the concentration camps were liberated, the Americans insisted on taking groups of Germans to witness what was in the camps. I've read some of the accounts by real people, who were horrified by what they saw.
I suspect the results of Brexit will be more gradual. People will be worse off, as prices rise and people lose their jobs. Families will be dispersed and the UK will lose its position in the world. That's what happens when great powers lose their influence and empires die.
Of course, the government will try to hide the effects by lying and will prop up the economy with debt, so that the majority won't accept what's going on.
By the time the results are really noticeable, many of the people who voted for it will be dead.