Reaching a middle ground today will be hard. Merkel's immigration policy has basically secured a further polarization of Europe and no one will benefit from this.
It's why the pendulum is swinging back to the right, and very quickly. Even a country like Sweden has seen such a quick shift. It's inevitable. Going forward, an economically stagnant Europe, coupled with military and economic decline, with the loss of manufacturing to Asia, unemployment rates rising, aging demographics, you're going to see problems be scapegoated to migrants and non-white people.
This recent migration of upward of 500k to 1 million+ refugees is going to have ramifications for probably the next 50 years. High poverty levels, slums, high crime rates. The difference between regulated immigration and unchecked migration, is you can determine who comes into the country and who doesn't. It's why America and Canada have largely been successful, they get educated degree holders, people who at least speak the language, have friends, family, economic opportunities lined up. They have jobs or school waiting for them etc. But throwing 1 million refugees from North Africa and the Middle East, who probably aren't educated, don't speak a single word of the language, don't know the customs and culture of the area, have no jobs or money. It's a big problem. What happens when thousands of people get hungry with little food? What happens if they have no job?
Europe has already seen these issues for the past several years. Just look at places like Calais that existed before the recent Syrian crisis. Look at Greece and Italy which begged for help for years. Things like break and enters, pickpocketing, assault, sexual assault, vandalism will rise in the area. It's inevitable. The poverty level will be crazy too, as these migrants have children and their children have children. They won't really assimilate well, will create what people usually call slums. Aren't there areas in Sweden, France, Belgium, Denmark that cops and tourists and other residents are afraid to go?
And so people will turn against politicians. They'll say this is your fault, maybe it is. You'll see many parties exploit this sentiment.