noun
white supremacist
Refers to a person who believes in or advocates white supremacy. Often used in political and social contexts.
彼は白人至上主義者として知られている。
He is known as a white supremacist.
白人至上主義 is the ideology of white supremacy, while 白人至上主義者 refers to a person who holds that ideology.
Compound of 白人 (white person), 至上 (supreme), 主義 (doctrine), and 者 (person).