The mother of a man who died on May 22, 2015, in a police raid lights a candle at the warehouse where her son was killed in a ranch in Tanhuato. Rights groups say that although Mexico's security forces face grave dangers in their fight against often brutal cartels, it is vital they hold themselves to higher standards. Lack of rules on use of forceUnlike the army, Mexican police do not have clear rules of engagement. Also in 2014, 22 suspected gang members were killed by army officers who were later accused of murder. Police tape is seen at the entrance of the ranch in Tanhuato, state of Michoacan, Mexico, June 28, 2016.

Source: CBC News August 19, 2016 08:17 UTC