Dear Walmart C.E.O.: You Have the Power to Curb Gun Violence. Do It.. McMillon, C Douglas, Walmart Stores Inc, Gun Control, El Paso, Tex, Shooting (2019), Firearms, Mass Shootings, Apple Inc, Apple Pay, Goldman Sachs Group Inc, JPMorgan Chase & Company, National Rifle Assn, Wells Fargo & Company, Cook, Timothy D, Dimon, James