New York City Mayor Zohran Kwame Mamdani has launched a crackdown on online retailers selling allegedly illegal high-speed e-bikes and e-scooters, targeting major platforms including Walmart Inc. (NASDAQ:WMT), Target Corp. (NYSE:TGT), Wayfair Inc. (NYSE:W), Temu parent PDD Holdings Inc (NASDAQ:PDD) and Amazon.com, Inc. (NASDAQ:AMZN) over public safety concerns.