Y! Answerers I have a serious question to ask? What is going on with ppl killing family and killing children?

With the Chris Benoit thing, the Yates mother who killed all her kids, the lady who chopped off her 9 mth old daughters arms...and countless others recently that we've heard in the news...even the pregnant girl that was found earlier this week dead, 9 mths pregnant!! I dont understand what would cause ppl to kill children, family members..but thats all you hear about now..it saddens me..I just couldnt imagine. But heres another question...who is to blame?? The killers, Satan..and plz forgive me... God?? Ppl blame Satan and say he told them to, is that an excuse or what?? Why didnt God save the children who are innocent in these murders? I am not mocking God but I dont understand why these kids have to go thru death in that manner..I would like a page from the Bible that could explain what is going on in our world and explain why?? i know there are some things that we not get reveiled to us untilthe Lord returns but is this the beginning of the end?? What do you think?? Thank you