On Saturday, 28 May 2011 at two in the morning, a Bexar County cop in San Antonio, Texas was waiting at a traffic light when somebody drove up and opened fire. Victims of police brutality, perjury, enforcement of unjust laws and unreasonable searches and seizures can take comfort that this does happen, cops do get brought to justice.
A lot of men from New Hampshire were at the Battle of Bunker Hill, 17 June 1775. There weren't "good" and "bad" Redcoats and nobody tried to spot the same one that wounded him two months earlier in Concord.
Believe it or not, the cops in Texas are still trying to determine a motive! Like, duh! They're still looking for who did it. They never know who will strike, nor when nor where nor how, and the dispatcher always responds by sending in swarms of targets.
I advocate not catching the license plate of the cop-killer's vehicle if you see something like this.