Yeah, FWIW, I'm in favor of being very selective with the kind of Muslim refugees that the West takes in. Again, the Persians over here in southern California have managed to assimilate very well. But they probably largely consist of the Persian middle- and upper-classes. Taking in working-class Muslim refugees probably isn't the best idea, at least not unless they're feminists or gay or something like that. And of course any Muslim refugee who supports murdering people over Muhammad cartoons should be resettled in other Muslim countries, not in the West.
And Yes, Europe did have a serious problem with bad behavior from some of its Afghan refugees:
Afghans stand out among the refugees committing crimes in Austria and elsewhere. Why?
nationalinterest.org
Ironically, the fall of the Taliban might result in an improvement in the quality of the Afghan refugees who will want to move to the West. Beforehand, Afghanistan's smart people often stayed and tried to improve their own country. Now, with Taliban rule, that's no longer an option for many of them due to the risk of death and/or imprisonment if they will permanently stay in Afghanistan.