Ok, I know it was 15 years ago a day or two ago but it still brings tears to my eyes. I dont want to get into all the politics of it as thats not appropriate right now. I honestly dont know of anything in the news that upsets me as much as this. R.I.P. sweet children and their teacher! 
http://www.youtube.com/watch?v=SdENZegzKvA
http://www.youtube.com/watch?v=SdENZegzKvA