I've mentioned in the past that I live by three schools. Two elementary schools and one high school. Two of those schools are charter schools. Now I have nothing against charter schools in theory or in practice. I DO; however, have MUCH to complain about the parents who drop their kids off at said schools. Why they all drive mini vans, I neither know nor care, but I DO care that the entire lot (no, not generalization-fact based upon observation as I am trying to drive to work each morning) of them have no concept of the turn signal.
For those avid readers of CPR who care about the history of the turn signal, wikipedia and I will break it down for you... they've been around a while and they are a great idea. Let me further break it down by saying that the ability to signal whether we want to go left or right is what separates us from beasts. Yes, the turn signal civilizes us. The turn signal transformed us into a polite group of people who are not only safe, but also considerate of others around them.
Note to any charter school parents reading this: DO NOT dodge and weave as though you are on a bumper car collision course. CHECK all rear view and side mirrors BEFORE darting into the street. USE YOUR TURN SIGNALS! For the love of all humanity USE THEM.