the bbc world service latin america regional editor leonardo rocha reports.llavicencio was shot dead as he finished a rally in the capital, quito. he was approached by a gunman who shot him in the head three times be or they escape. he was a former union leader, a former journalist who clashed with other politicians in the past for his role as an investigative journalist, and he was a current member of congress. he was running on an anti—corruption and pro— environmental campaign. he was one of several candidates running for president. the first round of the election will take place on august 20, he was opinion polls put in third orfourth place but he had a chance because there would be a second round of votes probably later this year. he is the latest victim of this crime wave in ecuador, he survived an attempt on his life before, and ecuador is going through a serious crisis, triggered mainly by the increasing involvement of mexican drug gangs in the country. there have been lots of murders, prison riots and other politicians have been targeted and killed d