Sure, Europe is capable of at least one more ethnic cleansing -- they will make sure that in the next 10-15 years that they will finish Hitler's work and totally cleanse the Jews from Europe. That's why they do nothing now as Jews get beaten, shot and stabbed, and their synagogues burned.
But cleanse Muslims? Never. Muslims serve a useful purpose to the Europeans -- getting rid of the Jews.
Norwegian christians have started a guard outside the oslo synagogue to protect it from muslims militants.
That said, European anti-semitism is still a scary prospect. But, is not all black and white.
For instance, the largest political party in Norway is a staunch defender of jews and Israel.
Nah, you're paranoid, perhaps with some reason. The Muslims are much more unwelcome in Europe than the Jews.