In March 1939, Arrow Cross supporters disrupted a performance at the Budapest opera house by chanting "Justice for Szálasi!" loud enough for the regent to hear. A fight broke out, and when Montgomery went to take a closer look, he discovered that...

...two or three men were on the floor and he [Horthy] had another by the throat, slapping his face and shouting what I learned afterward was: "So you would betray your country, would you?" The Regent was alone, but he had the situation in hand.... The whole incident was typical not only of the Regent's deep hatred of alien doctrine, but of the kind of man he is. Although he was around seventy two years of age, it did not occur to him to ask for help; he went right ahead like a skipper with a mutiny on his hands.
Montgomery, John F. Hungary: The Unwilling Satellite, Part One: What Price Independence?