How Mexico's attack on human rights undercut an international investigation

Pushback goes beyond the Ayotzinapa case of missing students with reports of widespread torture and group accusing government of ‘smear campaign’
With little fanfare, Mexican officials have quietly tried to undercut an international investigation into one of the country’s worst human rights tragedies: the attack on 43 students from the Ayotzinapa teacher training school, who were kidnapped and presumably killed by police and whose bodies have never been found.
At a press confer