[Republic of Texas]

They weren't too lazy, but if you shut the door, then you don't get to hear your "subjects" beg some more. Also, it is a tacit admission that the people you have subjugated on the side of the road, might be human. It's also harder to kill the dog if it's still in the car.

[LibWhacker]

BTTT! Absolutely. That's the way I see it. Leaving the door open was a deliberate act on the part of at least some of these cops so that they would have an opportunity to kill the dogs and make "the perps" suffer. I've known a lot of cops. Most are great people. But some are real psychos and do not belong in uniform.