It was dark (12:35 AM), wet and on a winding road in the Appalachian Mountains. There is nothing in the article that states the boys did it on purpose.
The teen's car veered over the center line at a slight curve in the wet two-lane road and rammed into the deputy's cruiser parked on the shoulder waiting to join the pursuit.
http://www.wlky.com/news/15019001/detail.html
Deputy, Police Dog Killed In Deliberate Crash
I agree with previous Freepers who said the chase should have been called-off. At 100+mph, an arrest wasn't worth the risk. A man is dead because the pursuing officer didn't exercise proper discretion. I'm not saying the driver is innocent, but you're talking about a teenager who has as much judgement as an intern under Bill Clinton's desk.
My sympathies go out to the innocent officer and his loved ones, but this was not murder.