Photojournalists raise photos of José Luis Cabezas as thousands gathered in Buenos Aires on Tuesday, February 25, 1997, to protest Cabezas' murder the previous month. (AP/Daniel Muzio)
Photojournalists raise photos of José Luis Cabezas as thousands gathered in Buenos Aires on Tuesday, February 25, 1997, to protest Cabezas' murder the previous month. (AP/Daniel Muzio)

Cabezas’ convicted killers are free, 15 years after murder