A study by a Cedar Rapids-based anti-gun group finds most Iowans who’re killed by guns knew the person who killed them. Jeremy Prevention of Gun Violence.Brigham says the study of Iowa gun deaths between 1996 and ’98 found that 73-percent Brigham is a board member of Iowans for the of gun homicides occurred between people either in domestic settings or between acquaintances. He says only 11-percent of the Iowa gun deaths were in the context of a crime, like robbery or rape.Governor Vilsack proposed in his Condition of the State address a few weeks ago that legislators pass a measure requiring trigger locks on all guns sold in Iowa. Brigham says that’s a good start and his group plans to push for more ways to reduce gun deaths.The group’s study found only three of 102 Iowa gun homicide victims were shot as home intruders. Also, it found a disproportionate number of Iowa’s gun homicide victims were in Polk County — 39-percent — even though the county is only home to 13-percent of the state’s population.