A Texas state trooper walks back to his car while providing security outside a Walmart store in El Paso on Aug. 4 after a mass shooting there. (Andres Leighton/AP)

Hundreds of white-collar Walmart employees are expected to walk out Wednesday afternoon to protest the retailer’s gun policies after shootings at two company stores left 24 people dead.

Workers at Walmart’s e-commerce offices in San Bruno, Calif., Portland, Ore., and Brooklyn are taking action to urge the world’s largest retailer to stop selling guns and discontinue donations to politicians who receive funding from the National Rifle Association. Walmart sells guns in about half of its 4,750 U.S. stores, making it one of the nation’s largest retailers of firearms and ammunition.

The protest, planned for 3 p.m., comes after a gunman killed 22 people and wounded dozens of others at a Walmart store in El Paso on Saturday. Days earlier, a Walmart employee fatally shot two co-workers at a store in Southaven, Miss.

“There’s an intense irony that Walmart continues to sell guns despite the constant shootings in its stores,” said Kate Kesner, an e-commerce employee in San Bruno who is helping organize the protest.

Organizers also started a Change.org petition to call on company executives to stop selling firearms. As of Wednesday morning, it had more than 25,750 signatures.

[Walmart says it will keep selling guns, even as advocacy groups and workers voice concerns]