That’s the result of this bombing that will affect your lives and mine.
Wait for the regulations to come out that say a minimum of 5 police officers and k-9 unit for every mile of race distance, or something similar.
Somebody pays for that. The cost of marathons just became prohibitive.
Not Unreasonable 
True if we grossly over-react, but color me skeptical. Interest in running the Boston Marathon is at an all-time high: http://running.competitor.com/2013/04/news/want-to-qualify-for-boston-in-2014_70892