I think one of the reasons there are so many more people who are violent, gay, selfish, ignorant or any other category is because there are so many more people. They have always been there, making up whatever percentage of the population. There's now more people for the percentage to draw on.
All the same, it's still terrible. <img src="/ubbthreads/images/graemlins/disagree.gif" alt="" />
I agree that your upbringing has a lot to do with it. People like to accuse games and movies and the media for inciting violence, but all they do is give the violent people ideas. They had violent urges before they saw the inspiration.
EDIT: Just to clarify, the attitudes I've listed above are merely more memmorable or noticable ones. There are also more caring, intelligent, athletic, gifted, and talented people out there for the same reasons. They too take inspiration from various mediums to do what they do, but it is their upbringing that helps give them their traits.
