This photo claiming to compare the presidents of Argentina, Chile & Brazil today with those in the 1970s is making the rounds on Twitter:
While the exact picture is false (the three stooges in the bottom panel are the military junta that governed Chile before Pinochet broke up the band to go solo), the idea is exactly correct.
In the mid-70s, all three countries were “led” by Military dictatorships, though in Brazil, the President was chosen by the military and then “approved” by the Legislature. And now the three countries are led by women who won reasonably free and fair elections.
Here are pics of the actual dudes who were military dictators as of 1976 in the three countries (some are taken post-dictatorship):