@449841af I'm not familiar with that story, but about 2 years ago we had a father of 3 get hit by a car while on his morning run.  We live in a town of 25k people, outside of Seattle.  So it became pretty big news.

They eventually found the killers from a city about 20 minutes away.  Two 15 year old girls stole their mom's car and went out for a joy ride and thought it would be "funny" to hit him.

What is wrong with these kids?! 

 @6350630e sounds like a similar situation. 
The video was so disturbing to watch. 

They laughed and filmed the whole thing.