Bad news, the attack in Boston, but the media is acting like it's another 9/11.
Front page news? Yes.
Special TV coverage? Yes.
Virtually nonstop TV coverage? No.
It's likely an angry nut job, or a few of them, acting out their tax day revenge fantasies, but in a woefully misguided, cruel way. If you think taxes are wrong, persuade everyone not to pay them. Problem solved. Don't hurt others to make your point about it or anything else.