(WCMH) — Walmart employees are expected to walk out in protest of the retailer’s gun sales policies Wednesday afternoon. The Washington Post reports hundreds of workers at Walmart e-commerce offices in California, Portland and Brooklyn are planning to walk out at 3 p.m. The walk out comes after a gunman opened fire in an El Paso Walmart Saturday, killing 22 people and wounding dozens. Last week, a Walmart employee shot and killed two co-workers at a store in Southaven, Mississippi. Organizers started a Change.org petition calling on Walmart and the retailer’s president and CEO Doug McMillon to “cease the sale...