Street art is often used as a medium for political or social commentary, allowing artists to communicate their messages directly to the public.

Street art covers a wide range of themes, including love and relationships, politics and social issues, nature and the environment, and many more.

The relationship between street art and censorship is complex and varies depending on the context. In some cases, street art is censored by authorities due to its political or social content, while in other cases it is tolerated or even encouraged.

All of the mentioned street art pieces have been censored at some point, either by being removed, painted over, or otherwise obscured.

There are a number of arguments in favor of censoring street art, including that it can be offensive or inappropriate, that it can be used to promote illegal activities, and that it can damage public property.

There are a number of arguments against censoring street art, including that it is a form of free speech, that it can beautify public spaces, and that it can raise awareness of important issues.

Street artists can avoid censorship in a number of ways, including using anonymous identities, working in collaboration with authorities, and creating temporary or ephemeral works.

The future of street art in relation to censorship is difficult to predict, as it depends on a number of factors, including the political and social climate, the attitudes of authorities towards street art, and the creativity and resourcefulness of street artists.

Getting permission from authorities is not a common technique used by street artists to avoid censorship, as it would defeat the purpose of street art as a form of unsanctioned expression.

Banksy is a famous street artist who is known for his anonymous identity and his use of stencils to create thought-provoking and often politically charged works of art.

Keith Haring was a famous street artist who was known for his vibrant and colorful graffiti murals, which often featured playful and cartoonish characters.

Wheatpaste graffiti is a street art movement that emerged in the 1980s and is characterized by its use of wheatpaste posters to create large-scale and often politically charged works of art.

Advertising and consumerism are not common themes explored in street art, as street art is typically used as a medium for political or social commentary rather than for promoting commercial products.

Shepard Fairey is a famous street artist who is known for his iconic "Obey Giant" campaign, which featured a stylized image of Andre the Giant with the word "Obey" underneath.

Jean-Michel Basquiat was a famous street artist who was known for his use of found objects and recycled materials in his works, which often featured text and symbols.