https://www.reuters.com/article/us-tech-antitrust-explainer/explainer-what-google-facebook-could-face-in-u-s-antitrust-probe-idUSKCN1UJ2Z3 >The U.S. Department of Justice is investigating whether big technology companies are engaged in anticompetitive behavior, addressing a rising tide of criticism they have become too powerful to the detriment of consumers.