IIRC, Christianity teaches that we are born evil because of Eve!
But, I think that a part of this is due to mass media and social media/technology. It is difficult to feel empathy for people in an earthquake on the other side of the planet when the next two news stories involve people in your own town. We hear/read so much that we just listen to what we want and ignore the rest.
I believe that for the most part the "lower classes" in America are dragging us down. Evil can be seen as giving in to your most base desires, and that is what I see being done more and more. We see a rise in single parent households, due to the idea that "I want to get laid NOW, but I don't want to be a parent LATER". Children then start to get raised by TV and their friends, because the parents are gone, immature themselves or too busy to do the damn job. this leads to kids watching Jersey Shore, Real Housewives, Bad Girls Club or any of the other crap shows on TV not intended for kids. I have seen far too many people in their 20's that are more concerned with sex, alcohol, looking kewl and really great rims on their cars. This is in contrast to having a career, saving for the future, etc.
I work in health insurance. It is close to a CRIME how pathetic some young people are. Last week I had the mother of a 20-somthing guy call. He was standing there, but his mommy had to do all the talking. Why? Because he had recently become a father, but didn't know how to add his child to his insurance. Or to be more precise, he didn't know how to politely ask what the benefits were or ask how to get the child on the plan without cursing and yelling. Dude, use a condom and some common sense.
I could go on and on . . . . . .