https://www.vice.com/en_us/article/z3mm5x/amazon-delivery-drivers-walk-out-in-first-ever-driver-strike

Amazon delivery drivers and dispatchers walked out of their delivery facility on Thursday to demand that Amazon bargain with them. The 84 drivers currently on strike have held picket lines before, but this is the first time Amazon drivers have walked out in the U.S., according to a Teamsters press release. 

The drivers, who work for the Amazon delivery service partner (DSP) Battle-Tested Strategies in Palmdale, California, unionized with the Teamsters in late April, and are demanding that Amazon come to the bargaining table to negotiate a contract. Drivers have already negotiated and ratified a contract with the DSP, which voluntarily recognized their union.