There are definitely more violent video games out these days, but I really don't see it as a problem. I myself preferred sports games like Madden when growing up more than shooting/war games, but many of my friends played such games and it didn't seem to have any effect on their life outside of the game.
I think the vast majority of people understand that they're just video games, and playing them doesn't make them more violent or aggressive or anything in everyday life. I've heard of studies that show the opposite, but I'm just going by my personal experience.
Of course, there are some psychopaths and serial killers who were influenced by violent video games, but they are a tiny minority.
If anything, I'm more concerned about people becoming too obsessed with video games to the point of becoming apathetic to issues of the real world. But again, that is not an issue for the majority of people who play video games.