Welcome to Law.com Class Actions: Critical Mass, Law.com’s weekly briefing for class action and mass tort attorneys. I’m Amanda Bronstad. This week, the first jury trial over the opioid crisis opened on Tuesday in New York. Also, the U.S. Supreme Court’s decision in TransUnion v. Ramirez made it much harder to file statutory class actions, but not all plaintiffs’ lawyers are bleak. Plus: Find out who filed lawsuits over the collapse of a condominium in Surfside, Florida.