Purely speculation, but I suspect that our right wing movements have inspired ideologies that have again taken root in Europe and are more than ever a force to be reckoned with. The austerity measures coming into play around Europe, the huge debt crisis, the financial disasters. The Koch brothers, for example, are just a couple of right wing fanatics that we know about, I imagine there are quite a few, with nearly bottomless bank accounts and influence that spreads all over the world. That's not just in America either, there are similar people in every developed Nation. However, I suspect American financial influence plays a huge part in funding various militia, skinhead, Nazi and similar groups throughout the world.
The one percent and their minions are not going to go quietly into the night. I think part of the reason police forces have been so violently opposed to the occupy movements is because the money bags of the world are getting nervous.
One question I have asked myself... most of the Nations in Europe have long been considered by the right to be liberal strongholds. Is it possible that the international financial crisis we are still facing was deliberately brought about? In situations of severe debt, falling economic standards and living standards austerity measures historically come into play as do more conservative, more severe leaders.
All that said, I think it is inevitable that eventually we will have to learn the hard way again. History tends to repeat itself and the divide between the left and right is larger and more full of hate than ever.