(POLITICAL) [noun] [C], [adjective] [not gradable] [esp. disapproving] - (a person) having socialist or communist political opinionsIn the 1950s people's fear and hatred of communism were expressed in phrases such as "Better dead than Red."The Red Army was the name of the Soviet army.
RED
Meaning of RED in English
Cambridge English vocab. Кембриджский английский словарь. 2012