The final day of Lollapalooza opened in Grant Park under low gray skies, persistent patches of rain and the mud here to stay. Sunday headliners are Red Hot Chili Peppers on the T-Mobile mainstage and Lana Del Rey on the Bud Light stage. “There’s never been bad of enough weather to keep us away,” said Ryan Johnson of Chicago, who has been attending the festival with his wife and more recently ...