The Ezeiza massacre marked the end of the alliance of left- and right-wing Peronists which Perón had managed to form. Héctor Cámpora represented the main figure of the left wing, and
José López Rega, a former
federal police officer and Perón's personal secretary who had accompanied Perón during his exile in
Francoist Spain, was the right wing's representative. López Rega would also be the founder of the
Alianza Anticomunista Argentina right-wing death squad. A populist and a nationalist, Perón was popular from the far-left to the far-right, but this conjunction of forces ended that day. During his exile, Perón himself had supported both young left-wing Peronists, whose icons included
Che Guevara, the Montoneros,
Fuerzas Armadas Revolucionarias (FAR),
Fuerzas Armadas Peronistas (FAP), the
Peronist Youth (JP) and right-wing Peronists composed "Special Formations", gathering radicals such as the
Iron Guard (GH) or the
Movimiento Nacionalista Tacuara. The tribune had been set up at Puente 12 by Lieutenant-Colonel
Jorge Manuel Osinde and other far-right figures of Peronism, such as
Alberto Brito Lima and
Norma Kennedy.
Lorenzo Miguel,
Juan Manuel Abal Medina and
José Ignacio Rucci, general secretary of the CGT — controlled by the Peronist right wing – had the responsibility of organizing the Peronists' mobilization to Ezeiza. Members of the
Unión Obrera Metalúrgica trade union, the
Juventud sindical peronista and other right-wing sectors were also on Perón's tribune, facing the left-wing groups in the crowds (FAR, Montoneros, JP and others — the FAP had disarmed on May 25, 1973).
Italian terrorist
Stefano Delle Chiaie, who worked in
Operation Gladio but also maintained links with the
Chilean
DINA and
Turkish Grey Wolves member
Abdullah Çatlı, was also present at Ezeiza, according to investigations by Spanish judge
Baltasar Garzón.
Carlos "El Indio" Castillo, member of the
Concentración Nacionalista Universitaria (CNU), also took part in the massacre. ==Political context==