Best way: take away the reason Trump got elected.
I know this will sound somewhat out of reach for most people, but realistically, we want to stop the isolation wave, this is what needs to be done.
We need to have 3x minimum wage + benefits zero-skill jobs and we need something like 20 to 40 million of those in the US, and half a billion of those worldwide. Note, we don't need the jobs themselves, we need to actually have those people do something economically useful.
I realize this is not easy, and you can't just cheat, so shouting basic income will not get anyone anywhere. But if we could do that, worldwide, the "wave of conservatism" will stop dead in it's tracks. Trump will be opposed, borders will open, Europe will stay whole, ... And the best part of it is: if you do this, you'll probably yourself get to be in the top10 richest people in the world.
The alternative is that we get into ever more debt. Now debt requires interest to be paid. So when people say debt is now 100% of GDP that means there is effectively a transaction tax of, let's say on average twice the Fed's interest rate. This is extremely inaccurate, but it's not totally off of the mark. Right now that's a tax paid to the 1% of about 1% of every time you get paid, every dollar you spend, every dollar you give your landlord. If the FED raises rates 3x (or more) this year, as they've promised to do, by the end of 2017 it will be 2.5% or more. So in order to pay the interest on it we'll need systematically more austerity measures. Pension cuts, unemployment cuts, healthcare cuts, everything cuts.
(Now do you understand why countries going bankrupt is such a big deal and why debt restructuring is so unacceptable to the American rightists (democrat or republican) ? The 1% has a huge problem here. That amount of tax towards them is too much. It risks bankrupting entire economies, but there's soooo much money to be had. Every year from now on they can delay the inevitable debt collapse and avoid asset/property/wealth taxes they get 3% of all wealth on the planet. Every year. Real leftists, of course, are proposing that income taxes be abolished and replaced by a) wealth tax b) import tax c) asset taxes)