Legionnaires' rebellion and Bucharest pogrom
Between 21 and 23 January 1941, a rebellion of the Iron Guard paramilitary organization, whose members were known as Legionnaires, occurred in Bucharest, Romania. As their privileges were being gradually removed by the Conducător Ion Antonescu, the Legionnaires revolted.
Source: Wikipedia — Legionnaires' rebellion and Bucharest pogrom (CC BY-SA 4.0)