Okay, honestly, ignoring the fact that later in the episode, Dan would be the one to shoot Keith, did anyone at all EVER feel bad for him? I mean, for about 55 minutes, he was just as innocent as all those other parents and I can't help but occasionally think about what he was really feeling that whole day, before he shot Keith.
Karen killed me when she went to his office the next episode and blamed him. She absolutely tore into him when he said he had responsibility as the mayor, and honestly, I completely agreed with him when he said he had soooo much to worry about with that. But I also agreed with Karen, when she asked "what about your responsibility as a brother? What about your responsibility as a father? You had two sons in there Dan!"
So really, Dan had it the absolute and complete and undeniably worst that day, just in my opinion, up until he shot Keith. I know some people realy have no sympathy for Dan ever in the series and especially in that episode, but I have a huge conscience and so I can't help but think of all the ways 3x16 really affected him. He was hated by both of his sons and even though he treated them both horribly, I truly believe that no parent can ever hate their child and he would have never gotten over it if one, or both of them, had died. He also somehow got Keith into that school. I don't know exactly when he decided to kill him, but even if it was just for a second, he would have had guilt about that, knowing he could have just led Keith to his death. And then the mayor thing. Obviously stressful.
So IDK. I'm really glad I started this thread because I really have listened to everyone's responses and it's making me realize how hard that day was for every single person involved. It makes me agree with what Brooke said in 3x17, "I may not have been in that school, but that doesn't mean that I don't carry that day around with me like everybody else." SO TRUE. You didn't have to be in that school to feel the impossible weight of one man's decision and you certainly didn't have to be in that school to know what it was like to feel fear.