so fucked up, especially to do this at a sporting event where everyone is pretty much purely innocent civilians, just killing for the sake of killing.
im actually surprised this type of thing hasnt happened more, just because its so damn easy to do. hopefully this doesnt turn into the next "cool thing" for psychopaths to do like school shootings have.
and whats worse, is by the looks of it, they were relatively small explosions, this could have been ALOT worse.