A woman walks past a Google sign in San Francisco. The Justice Department is launching an antitrust review of major online companies. The DOJ did not name the firms, but there have been increasing calls to regulate companies like Google, Facebook and Amazon.

A woman walks past a Google sign in San Francisco. The Justice Department is launching an antitrust review of major online companies. The DOJ did not name the firms, but there have been increasing calls to regulate companies like Google, Facebook and Amazon.