It's more recent than that. Since Merkel swung the door wide open in 2015 the continent has been getting swamped with Muslims and Africans. You can watch youtube videos of them washing up on European shores and then disappearing into the countryside. This is a daily occurrence. It really is insane that this is allowed to occur but this is where we're at with leftist ideology dominating Western culture. 

They're too afraid to even identify the problem, let alone deal with it. 

Let me lay it out plain and simple. Muslims equal terrorism. None of these attacks are occurring in Poland, Hungary, Slovakia or Czech Republic. Why? Because they've refused to take in un-vetted Muslim migrants.