SEATTLE (AP) — An Alaska man has been sentenced to 20 months in prison for trying to set fire to a Seattle police precinct during last summer’s racial justice protests. Desmond David-Pitts pleaded guilty to a federal arson conspiracy charge in January, acknowledging he set a fire to trash piled outside the East Precinct last Aug. 24 while others tried to bar a door to keep officers from leaving. David-Pitts was identified and arrested within an hour thanks to his distinctive pink-camouflage pants. He told investigators following his arrest that he had had bad experiences with police and that he was angry.