There have been some disturbing political developments across Europe in the last six months, the far right is gaining traction, I would not say it is "on the march" but the political balance of the last few decades seems to be on the slide. Brexit can't be blamed for this, the fact a British Prime Minister has backed into holding a vote on leaving the EU is a symptom of what is happening, not a cause.

Then I read this: http://www.bbc.co.uk/news/world-europe-37210138

"Brexit is bad but it won't hurt us as much economically as some fear - it's more of a psychological problem and it's a huge problem politically," he said.
"If we organise Brexit in the wrong way, then we'll be in deep trouble, so now we need to make sure that we don't allow Britain to keep the nice things, so to speak, related to Europe while taking no responsibility."

Yes - the Brits need to be punished for daring to endanger the EU.

This is not a healthy attitude and it's likely to drive new wedges between EU members as they argue about just how awkward they want to be in negotiations. It's also going to sour Europe's population (even further) on the EU if said EU is seen as "nasty".

Then we have the EU dictating tax arrangements to Ireland: http://www.bbc.co.uk/news/world-europe-37251084

Then there's Merkel's stance on immgration which seems to be stoking Xenophobia in Germany: http://www.bbc.co.uk/news/world-europe-37269330

Merkel, by the way, has been in power for over a decade and as it looks like she's going to run again she's starting to look increasingly like a German Margaret Thatcher. By this point Thatcher had arguably lost the plot too.