Here's a story I heard today (via DailyKos): a man named John Crawford was shot and killed in a Walmart, as he talked on his cell phone, holding a toy gun in the toy section of the store. It's not a new story, but it's new to me, and it is shocking.
I don't have to tell you what color his skin was.
Addendum: How often are unarmed black men gunned down by police? Across the U.S., the government doesn't care enough to count "unjustified killings", and not many independent studies exist.