Graffiti is the term used to describe the unauthorized marking of public spaces with paint or other materials.

New York City is considered the birthplace of modern street art, with artists like Keith Haring and Jean-Michel Basquiat emerging in the 1980s.

A mural is a large-scale painting or mural created on a wall or other public surface.

Banksy is known for his iconic stencil graffiti of political figures and celebrities.

Tagging is the term used to describe the unauthorized marking of public spaces with a marker or other writing instrument.

Keith Haring is known for his colorful and playful street art installations.

Chalk Art is the term used to describe a temporary street art installation that is created using chalk or other temporary materials.

Shepard Fairey is known for his large-scale wheatpaste posters that often feature political or social commentary.

Sticker Art is the term used to describe the unauthorized marking of public spaces with stickers or other adhesive materials.

Robert Indiana is known for his iconic "Love" sculptures and murals.

Yarn Bombing is the term used to describe the unauthorized marking of public spaces with yarn or other textile materials.

Mr. Brainwash is known for his large-scale mosaic murals that often feature historical or cultural themes.

Projection Art is the term used to describe the unauthorized marking of public spaces with light projections or other illuminated materials.

Paul McCarthy is known for his large-scale inflatable sculptures that often feature political or social commentary.

Sound Art is the term used to describe the unauthorized marking of public spaces with sound or other auditory materials.