Existencilism is a compact, self‑published Banksy collection featuring many of his early stencilled works — political, satirical, and darkly humorous pieces that appeared on streets, walls, and public spaces in the late 1990s and early 2000s. The book showcases his developing visual language: anti‑authoritarian messages, cultural parody, and sharply minimalist stencil technique. It’s now sought after as a snapshot of Banksy’s formative period, capturing the raw, subversive energy that later made him internationally famous.