1. Part of the marathon was dedicated to Newtown victims.
Oh jeez, AP reporter on TV says Newtown families were in the VIP section right by the explosion. No injury reports, she's locked down w/ one
Oh jeez, AP reporter on TV says Newtown families were in the VIP section right by the explosion. No injury reports, she's locked down w/ one-- Michael Ditto
2. The history of violence on Patriots' Day.
Here's Wolf Blitzer discussing it:
3. The Waco siege ended on Patriots' Day.
I was at Fenway Park w my dad and @mikebarnicle during Waco which was on Patriots Day in 1993. Speculating on possible link.
I was at Fenway Park w my dad and @mikebarnicle during Waco which was on Patriots Day in 1993. Speculating on possible link.-- Luke Russert
4. Contrary to some claims on Twitter, the Oklahoma City bombing did not take place on Patriots' Day.
But:
Correction: OK City bombing was not on Patriot's Day, but McVeigh stated he did it on anniversary of Pat's Day Waco assault.
Correction: OK City bombing was not on Patriot's Day, but McVeigh stated he did it on anniversary of Pat's Day Waco assault.-- Jason Kottke
Bomber Timothy McVeigh's letter and explanation on that here.
5. There's rampant speculation — but so far, only speculation — that the explosion could be either an al-Qaeda attack or a "right-wing extremist" assault.
CNN's senior national security said investigators should pay attention to what kind of explosives are used: "If it was hydrogen peroxide, this is a signature of al-Qaeda. If it was more conventional explosives, which are much harder to get ahold of now, that might be some other kind of right-wing extremists."