Welcome to Law.com Class Actions: Critical Mass, a weekly briefing for class action and mass tort attorneys.

This week: Plaintiffs’ firms opposing Johnson & Johnson’s latest $6.48 billion bankruptcy plan filed a class action over alleged “fraudulent maneuvers,” such as the “Texas two-step” merger. The U.S. Judicial Panel on Multidistrict Litigation is set to hear several big cases on May 30, including lawsuits alleging GM sends data on its drivers to insurance firms. Find out who filed the first class action in the wake of the DOJ’s antitrust case against Live Nation and Ticketmaster.