I don't have my own kids, but I teach school. Have to say, parents can definitely do a better job at raising their kids to behave more appropriately. It's not hard, really; just have to start young. (I don't mean newborn infant-young, but it's not unreasonable to have simple behavior expectations for a two or three year old.) It would be nice to see parents pay more attention to their children's behavior in public and to guide them proactively, instead of the "Stop that, Johnny," reaction that usually happens once the kid is doing something that is clearly inappropriate and irritating to other people. Of course it's a lot of work, and it's tiring as heck--but if the effort is invested early in the child's development, it will make the rest of the child's growing up time a whole lot more enjoyable for everyone.