in Travel Top 10 Most Dangerous Cities in The World by RaineWork September 5, 2019, 3:20 AM 836 Views 5 Tijuana, Mexico (Homicides per 100,000: 100.77) Policemen stand guard as forensic investigators work on the exhumation of a mass grave believed to have been used to bury unidentified victims of drug violence, in Tijuana, Mexico, August 16, 2017. Prev5 of 10Next