2:20ABC NewsElectionsAugust 10, 2019Gun violence takes center stage in 2020 race In downtown Des Moines, Iowa, 2020 presidential candidates pushed for universal background checks at a rally with gun-control advocates Up Next in news2020 Dem. pres. candidates talk gun safety and border crisis at Iowa State FairAugust 9, 2019Democratic presidential candidates take on Trump at Iowa State FairAugust 9, 2019Students Demand Action member talks gun violence preventionAugust 9, 2019