Google Fusion Tables. These are a good way to share data. You'll see me use more of them in the future, despite their inability to do things Excel does easily like multilines and stackbars.
So here's murder stats for the US from 1980 to 2004. Obviously it's much more dangerous to be a black male in America, but a bit less dangerous than it used to be. There's only a little bit of discussion you can have based on this limited data set, but..
Here is the link back to the data.