I like it by Foghorn String Band, and here's some I would sing.
POLICE in A

PO-LICE COME, HE DIDN'T WANT TO GO (THIS MORNING) x 3
SHOT HIM IN THE HEAD WITH A 44

OLD UNCLE JOHN LAYING ON A LOG
FINGER ON THE TRIGGER, EYE ON THE HOG

PULLED THE TRIGGER, GUN WENT BANG
GET THE GAMBLE LET HIM HANG

OLD UNCLE JOHN SITTING ON A PLOW
WANTS TO GET A WOMAN BUT DON'T KNOW HOW

KNOW A LITTLE SECRET I AINT GONNA TELL
I WANNA GO TO HEAVEN BUT I'M GOING TO HELL

ROLL YOUR DICE, HAVE YOUR FUN
RUN LIKE THE DEVIL WHEN THE PO-LICE COME