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

This week: Lawyers for families of those who died in two 737 Max plane crashes will ask a judge to reject Boeing’s criminal plea agreement. Monsanto moved to throw out an upcoming PCB trial, citing a Washington state appeals court’s ruling. Find out who was appointed to lead the antitrust litigation over replacement passenger tires made by Goodyear, Michelin and others.