REDONDO BEACH, Calif.—Dozens of Amazon and rideshare drivers gathered in front of an Amazon warehouse and Uber Greenlight hub in Redondo Beach early in the morning of March 16 and called for higher compensation as gas prices soar. At the rally, the drivers formed a caravan on Redondo Beach Avenue with signs stuck to their car that read, “Running on empty, we can’t afford gas, tech giants pay up.” Nearby drivers honked their horns to show support. The rally was organized by SEIU 721, a labor union representing Southern California public service workers, and was joined by drivers with Mobile Workers Alliance, a group of more than 15,000 drivers. “As independent contractors, rideshare and Amazon Flex drivers largely cover the cost of fuel on their own with little support from the tech companies they work for,” according to a statement released by SEIU 721. Martin Manteca, organizing director for SEIU …