A person who attacks an enemy in the enemy’s territory; a marauder
Kelley and his band of raiders
An investor who initiates or participates in a bear raid.
Originally: a student intern working on the public advocacy campaigns pursued by Nader; an activist or researcher affiliated with campaigns resembling Nader's. Later in extended use: a political supporter of Ralph Nader.
A financier who makes a practice of making hostile takeover bids for companies, either to control their policies or to resell them for a profit