https://www.cnet.com/news/facebook-and-twitter-face-senate-over-accusations-of-tech-censorship/

"Not only does big tech have the power to silence voices with which they disagree, but big tech has the power to collate a person's feed in a way that agrees with their political agenda," Ted Cruz, a Republican from Texas and chairman of the Senate Judiciary Committee's Subcommittee on the Constitution, said in his opening statement. "What makes the threat of political censorship so problematic is the lack of transparency."

The tech giants denied accusations that they're pushing a political agenda.