I've been all over Europe, never had a problem. In some cities watch out for pick-pockets, (Amsterdam & Rome, esp).
Although there are many middle easterners in Europe (esp from Turkey), as for roaming bands of Taliban?
I didn't see any such jam...Did see many Turkish food stands on the other hand (some of which are quite good), with plenty of food to cram. I would advise you to bring a good cam. One might advise, beware of anything that might be a tourist oriented scam. The continent is full of wonderful places to visit and revisit with your fam.