Things like this are terrible when they happen. I never understand the need to take another human beings life, for any purpose. I have friends in Boston, and thankfully they're okay, but those who are not, my heart goes out to them.
The only thing that always stresses me out about events like this, is that suddenly every one acts like this is an isolated incident. The events of today, were despicable by any stretch of the imagination, but unfortunately, for some parts of the world tragedies like these are the norm. Kids wake up and walk to school to the sound of bullets and explosions and nowhere is ever safe. And that's just the war torn areas. There are people without food who have to rely on other means to survive.
The world is a messed up place, there is no need for us as human beings to make it any worse. We should make it better if anything, or at least try to. Days like these remind us of that, it's just saddening that it takes a tragedy for the people to reflect.