É Heinlein, "The Roads Must Roll" (eu li isso há cerca de 25 anos atrás e essa cena ficou na minha cabeça também).
"You saw Hughes brought in-how many of you want a chance to kill the louse that did it?" Three of the cadets reacted almost at once, breaking ranks and striding forward. Gaines looked at them coldly. "Very well. You three turn in your weapons, and return to your quarters. Any of the rest of you that think this is a matter of private revenge, or, a hunting party, may join them."