Today on Post Reports, we dig into the findings of an explosive new report about Uber, and reveal the human cost of Uber’s quest for rapid growth.

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The Uber Files is an international investigation into the ride-hailing company’s aggressive entrance into cities around the world — while frequently challenging the reach of existing laws and regulations. Documents illuminate how Uber used stealth technology to thwart regulators and law enforcement and how the company courted prominent political leaders, Russian oligarchs and media conglomerates as it sought footholds outside the United States.

The project is based on more than 124,000 emails, text messages, memos and other records that a former top lobbyist for Uber, Mark MacGann, provided to the Guardian. It shared the material with the International Consortium of Investigative Journalists, which helped lead the project, and dozens of other news organizations, including The Washington Post. Journalists from 29 countries joined the effort to analyze the records over four months.

Today, reporter Doug MacMillan tells the behind-the-scenes story of the tactics Uber used as the company expanded rapidly, and the human cost for drivers.