What is the significance of Banksy's 'Crude Oil Vertriano' painting that's being auctioned?

Banksy's 'Crude Oil Vertriano' is a rare painting being auctioned by Sotheby's, expected to fetch over $6 million. The artwork, currently owned by Blink-182 bassist Mark Hoppus, features Banksy's modifications to Jackson Vettriano's 1992 original piece, including a sinking oil liner and toxic waste barrel. The painting carries a powerful environmental message, highlighting how big businesses damage our environment. Part of the auction proceeds will support victims of the 1995 Los Angeles wildfires, demonstrating how this artwork represents the intersection of artistic expression, environmental activism, and philanthropy.