Humanity loves to make mountains out of molehills.  Whether it's the latest disease with an animal's name in it, nuclear meltdowns, or witches, there's always something to pretend is going to come get you.  That's not to say there are real dangers out there.  Like overly graphic scenes in TV shows and movies.  That'll scar you for life.  Just say "no" to anything with a harder rating than G.