Sorry guys but I have to say it! The government is responsible for a lot of it. Letting career criminals out of jail, poor gun laws that allow ONLY criminals to own them, etc and etc.
Not sure if this could have been prevented but I'm afraid it will lead to security and/or police at the entrance to every grammar school too.
This is a good time to console with your spiritual leader with whatever religion you practice to relieve the stress you have regarding this whether you realize you have it or not. All you parents out there have it. It appears that perhaps armageddon is on the way!
Some advice; talk to your kids about it and come up with a plan; it sucks but a prepared person/child is the best defense.
During holiday season, be VERY aware of people approaching you in the parking lots, especially if your hands are full. If someone is following you, go back into the store.
Look around you when getting out of car-if someone is suspicious get back in your car and drive away even if you are in your own driveway.
When you pull into the garage, stand at the door as it closes--DO NOT turn around and leave the garage until the door is closed.
And continue to pray for all the children of the world; they have it the hardest....