By Daniela Germano A young man who sold a semi-automatic rifle later used to kill two Edmonton police officers has been found guilty of manslaughter in a rare case his lawyer argued would be used to expand criminal liability for gun violence across the country. Dennis Okeymow sat still next to his lawyer, his hands in his lap, as he was convicted Tuesday on three counts of manslaughter. The 21-year-old was also convicted on three counts of criminal negligence causing death, two counts of unlawfully causing bodily harm and two counts of criminal negligence causing bodily harm. Justice John Little said while Okeymow didn’t pull the trigger, by selling a semi-automatic rifle to 16-year-old Roman Shewchuk, the man knew or should have known something terrible could result. Okeymow was charged…






