Thirteen mayors have been killed so far this year in Mexico , in states around the country . Many mayors have been killed in Mexico this year . Most are from small towns where they are more vulnerable . Drug trafficking activities sometimes interfere with the work of mayor . The violence against them could increase , analysts say .
Many mayors have been killed in Mexico this year . Most are from small towns where they are more vulnerable . Drug trafficking activities sometimes interfere with the work of mayor . The violence against them could increase , analysts say .