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Tech CEOs Jeff Bezos, Tim Cook, Sundar Pichai and Mark Zuckerberg visited Capitol Hill to discuss their companies' dominance in the tech market. (Video: The Washington Post, Photo: Graeme Jennings/Pool via AP/The Washington Post)

Amazon, Apple, Facebook and Google grilled on Capitol Hill over their market power

The leaders behind the tech giants testified before Congress virtually

The leaders of Amazon, Apple, Facebook and Google took a brutal political lashing Wednesday as Democrats and Republicans confronted the executives for wielding their market power to crush competitors and amass data, customers and sky-high profits.  

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Big tech vs. the U.S. government: What you need to know

Big tech finds itself in the war path of local and federal government officials

The CEOs of Twitter, Facebook and Google testified before the House Committee on Energy and Commerce in March on social media’s role in promoting extremism and misinformation.

Read their testimony here: Twitter | Google | Facebook

What is Section 230? The little law that defined how the Internet works.

In October, the heads of Facebook, Google and Twitter testified before the Senate Commerce Committee.

In hopes of ending federal antitrust lawsuits and probes, Facebook offered to help create new competitor

The Justice Department filed a lawsuit against Google over antitrust violations. | Read the lawsuit

In July, the leaders behind Amazon, Apple, Facebook and Google testified before the House Judiciary subcommittee on antitrust, commercial and administrative law.