People seem to be looking for a single solution to the problem and there isn't one. There are however a couple of solutions that may reduce the amount of tragedies. First and foremost is bringing God back into our daily lives, and the government within all levels. Second is more gun control, and for parents, teachers and students to report anyone who acts like a threat to anyone, and the government must follow up and remove that threat. Parents must also regulate violence in any form with their children and it begins at an early age by not allowing them to watch or read or play violent movies or games. I totally agree that the principalities have a strong influence over people because they are not protected by the blood of Jesus, since they haven't accepted Him as their Lord and Savior. I also can't but help but wonder if a lot of people aren't really possessed by the devil just like they were in Jesus time. I have yet to find anywhere in the scriptures where it says that people today can't be possessed, yet we find countless warnings to be on guard where the devil can influence our minds to do evil. The devil knows his time is short and his whole goal is to posses souls.