The answer to this question is very simple: No, not at all, on the contrary: it is becoming less violent! Watch Steven Pinker discuss the basic facts at the TED-Talks – and get ready to be surprised:

Steven Pinker: A Brief History Of Violence

“Steven Pinker charts the decline of violence from Biblical times to the present, and argues that, though it may seem illogical and even obscene, given Iraq and Darfur, we are living in the most peaceful time in our species’ existence.”