A mom who attended Riot Fest with her son is thanking Green Day after becoming separated from the boy at the festival on Sunday (Sept. 21). How Green Day Made 'Dream Come True'By the time Green Day arrived onstage, Bobbi still had not made it back to her son's side. Three songs into the set, Green Day launched into "Know Your Enemy." READ MORE 6 Big Things That Happened at Riot Fest 2025"I have a really bad chest cold right now. Green Day are next set to perform at the Oceans Calling Festival in Ocean City, Maryland on Sept. 26.