The president of the Montgomery County police union said yesterday there has been an angry backlash against Chief Charles A. Moose's plans for a book and movie about last fall's sniper manhunt, and outrage at a recent attempt to equate his ethics skirmish to the great civil rights struggles of the 20th century. Moose's wife made that comparison at a news conference Monday, saying the chief's challenge to Montgomery County's ethics laws made him "no less of a man than Dr. [Martin Luther] King, Nelson Mandela and any other great person that stood for a principle." ... The union, in...