Thrice fans at City National Civic in San Jose on Nov. 2, 2017. Chloe Catajan/STAFF. AEG Presents, one of the world’s largest concert and event promoters, announced on Thursday that it will require proof of vaccination for entry into its owned and operated music venues and festivals. A negative COVID-19…

Ticketmaster and Live Nation tickets. Adam Pardee/STAFF. While much of the world is coming together to share resources in an attempt to mitigate the financial and emotional toll the coronavirus pandemic is taking, Ticketmaster tried to take a different tactic—until it quickly backfired. Traditionally, Ticketmaster, the largest seller of…