As a runner, a former Bostonian and a Massachusetts resident I am totally pissed. How dare some cowardly low life impose violence on a peaceful and celebratory event that is the Boston Marathon. Crawl back into your cave and under your rock and perhaps we can have some shrapnel be visited upon you. I will never completely understand what makes people like this tic and in reality I could give a shit as they aren't worth the brain energy.
I know several people who were in the city and some racing and they are all fine. I also had family and friends who checked in on me knowing I was a runner and perhaps I was racing [a dream]. I was at work.
My thoughts of course are with those who were injured and the families of those who were killed. They are also with the many people who rushed towards the sound of the blasts to help. What a contrast of heroism versus cowardice.