Sentence:  The majority of policemen, ... act so as to save the public from harm, i.e., they shun their duties. Instead of being up and about, interfering with the rights of the people, many policemen choose the honorable way out—they <WSD>coop</WSD>. <WSD>Cooping</WSD> (sleeping in some out-of-the-way place while on duty) was a situation which enraged w:Frank Serpico 
Meaning of the word marked with <WSD> tags:  Of a police officer: to sleep or relax while on duty. (from 1960s.)