The Taliban has already attempted a bombing in New York City. Thankfully the bombing failed. The terrorist was captured, put on trial, and convicted. I believe other Afghans have been checked up on for possible misdeeds as well.
Besides trying to overthrow the Pakistani government, and retake Afghanistan, there are now hundreds of Taliban fighters in Syria. They are becoming a menace across the world. They might even make it to your land - Canada.
Al Qaida declared war on the US and took the Taliban with them for the ride. Have you ever blamed them for any misdeeds or murder?