... no one is coming up with a motive.
My immediate response, when Paula asked me on the phone if I had heard the news about the shooting, was to suggest that the gunman was insane.
But that doesn't seem to be the case.
Nor is it the case that the shooter knew the officer he shot.
Nor did he seem to be a disgruntled right-wing - or left-wing - zealot.
Not hard-up for money.
Not a loner.
Not a fugitive from justice.
No apparent reason.
A police officer is dead. And we don't know why.