Fascists demonstrate as Leopold III meets with war veterans in Brussels

The transcript discusses a country's declaration of neutrality in future wars, King Leopold's ascension to his father's position, a public demonstration by the New Fascist Party, and the subsequent police response leading to over 300 arrests, including Leonda Grill, leader of the Patches Party.

What actions did the police take during the disturbances in Brussels?

Who was Leonda Grill and what happened to her during the disturbances?