people say to me did donald trump cause those folks to be killed? well, no, of course he didn't pull the trigger. he's certainly been tweeting out the ammunition. >> if more guns on the street made everybody safe, we would be the safest place in the world. >> we'll reduce gun deaths. we'll make this a government responsive to the will of the people. that's why we're here. >> who in god's name needs a weapon that can handle 100 rounds? for god's sake. >> that was just four of the 16 2020 candidates speaking at the gun sense forum in iowa today. 21 democrats in total are making stops at the iowa state fair. this year the usually upbeat and folksy event feels different. it's just a week after two mass shootings.