You use fascist to describe organizations, ideas, or systems which follow the principles of fascism.
双语例句
例： an upsurge of support for extreme rightist, nationalist and fascist organizations.
支持极右组织、民族主义组织和法西斯组织的狂潮。
例： the threatening nature of fascist ideology.
法西斯意识形态的威吓本性。