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

This week: Lawyers in the latest Roundup trial hurled accusations against one another of “trial misconduct” and improper comments to the jury. Lawyers for Marriott data breach victims defended a judge’s rare class certification order before the Fourth Circuit. Despite her concerns about a bloated leadership team, a federal judge appointed 22 lawyers to spearhead addiction lawsuits against social media sites, including Facebook and TikTok.