Greenpeacer

A gnawing worry that I would be taken for a Greenpeacer, or that someone would point me out as a fraud and throw me off the ship unnerved me.

The Soviets, who first saw the Greenpeacers as some sort of nutty California excursion boat, saw no reason to fear this misguided troop of whale-lovers...

Also coming home for the weekend was his eighteen-year-old Greenpeacer, who was threatening not to vote for him.