The shipping giant UPS has begun training nonunion employees to fill in for unionized workers, after the Teamsters voted to authorize a strike over stalled contract talks. Unless there’s a breakthrough, some 340,000 UPS workers could be on picket lines as soon as August 1. Over the weekend, New York Congressmember Alexandria Ocasio-Cortez joined other New York lawmakers at a Teamsters rally pledging support for what could become the largest single-employer strike in U.S. history.

Rep. Alexandria Ocasio-Cortez: “What we are about to step into requires solidarity from everybody — everybody — across the city, across this country, across politics, across union, across workers, because your fight right here is about being the tip of the spear for dignity for every worker in this country. Every worker in this country.”

Later in the broadcast, we’ll speak to the legendary historian of the Mexican Revolution and labor organizer, professor John Womack Jr., about building labor power and solidarity.