Taylor Swift vs Scooter Braun
Here's the simple story:
Taylor Swift left her previous record label : Big Machine Records in 2018. This record label is where she recorded all her previous music; and under her contract with them, they OWN all the masters. Since her leaving, they have sold the masters to Scooter Braun. Taylor and Scooter have a rocky past of bullying and other issues between the two.
This has created a social domino effect and response from other celebs including Demi Lovato, Kanye West, Kim K, Justin Beiber, and more.