I'm not going to get into another fight about how much the actual status quo wlll change if Bernie wins or not, but on the European point - it's always amusing to me, when European people try to act all high 'n' mighty about things, when they also try to ignore, shrug off, or have alternate explanations, for when over the past five to ten years, when their are actual significant amounts of brown people in the public sphere, that the European working class is acting exactly like the American working class when we started allowing black people into the American mainstream - running to parties who promise to punish The Other, while protecting the welfare state for the "right" people.
It turns out the reason why the main reason the welfare state suffered less damage in Europe wasn't some secret solidarity, a stronger union movement, or anything like that, but rather, there was no Other to point too until recently. Now, there is, and pissed off white people in former East Germany, rural France, and Belgium are acting just like pissed of white voters in America - voting for the far-right.
The reality is, assuming the GOP can't short circuit the electoral process permanently and something black swan isn't happening like a 3rd World War with China, the most likely world in 2050 is one where the US is a reasonable social democracy, and Europe is largely ruled by a bunch of either far-right or "left wing, but anti-Islam" parties, ala the Danish Swedish Democrats, or the shift Die Linke's leader tried in Germany.