Helen Mack Chang

Myrna was stabbed to death in 1990 near her office in Guatemala City by unknown assailants, believed to be ordered by a government that wanted to silence her public criticism.

[4] Beginning in 1991, Mack pursued the prosecution in Guatemala of those suspected of the crime, which included several men trained at the US Army School of the Americas (later renamed the Western Hemisphere Institute for Security Cooperation).

[6] The prosecution of the case resulted in the trial of two colonels and a general "as the intellectual authors of the murder; the highest-ranking officials in Guatemala ever to be tried for human rights violations.

[7] In addition to pursuing justice for her sister Myrna through national and international courts, the foundation engages in a broad array of other activities and programs to promote human rights in Guatemala.

In one of her first statements after her appointment, she asserted that the low pay and poor work conditions of Guatemala's police were key catalysts in corruption and must be addressed.