Following Juan Carlos Onganía's military coup of June 28, 1966, Alonso declared: "We congratulate ourselves in having witnessed the fall of the last bourgeois liberal government, because it will never be able to establish itself here again.".
Ao producirse o golpe militar do 28 de xuño de 1966, Alonso expresou: nos congratulamos de haber asistido a la caída del último gobierno liberal burgués, porque jamás podrá volver implantarse nada así.