80 percent americans want limit firearms access people mental illness require background check gun show private sales accord pew research center survey release thursday eighty-three percent also favor bar gun purchase federal no-fly watch list survey find gun owners far less supportive non-owners create federal database track gun sales ban assault-style weapons high-capacity magazines survey 3,930 u.s. adults include 1,269 gun owners march april provide snapshot american view gun gun policies nation grapple gun violence june 14 illinois man open fire republican members congress legally purchase gun baseball practice near washington wound louisiana representative steve scalise hours late up driver open fire handgun inside unite parcel service inc delivery center san francisco kill three co-workers fatally shoot advocate call renew push gun control measure republican-controlled congress seek relax exist gun laws national rifle association oppose expand background check argue government already notify someone no-fly list attempt buy gun pew survey respondents often diverge base whether gun owners non-owners republicans democrats urban rural residents overall 52 percent americans say gun laws strict today accord washington-based pew forty-four 44 percent adults survey say personally know someone shoot accidentally purpose 83 percent believe gun violence big moderately big u.s. problem violence local communities 49 percent black respondents say big problem compare 11 percent white large majority say easy access illegal gun contribute gun violence many think expand gun ownership would boost crime reduce among adults 89 percent favor policies prevent mentally ill purchase gun 84 percent favor background check private sales gun show track gun sales favor 71 percent overall ban assault weapons 68 percent ban high-capacity magazines 65 percent gun-owners show less approval non-owners pew u.s. survey find agreement gun-control proposals