Yeah, people have taken it way too seriously and are doing things that they think they can get away with just because the police are going to die, too. You shouldn't have to worry too much though, because it's not going to happen. But there is a phenomenon that's going to happen on the 21st. It's where the sun doesn't rise until late in the morning and it sets early in the afternoon. This phenomenon is called the Winter Solstice and it happens twice a year! I know, it blows my mind too!
People are afraid of dying because they don't know what will happen to them in regards to an afterlife, if the Mayans were right it proves there's an afterlife and you will go to it if not the world will plod on until the next doomsday :) x