Many things can be counted as street art - murals, stencil paintings, tags, graffiti. Every method has its own characteristics, but even though, they all share the same history and ideology.

The culture of painting on walls goes way back. Some murals are even 40 000 years old! One of the most known prehistoric art is called „Lascaux’s Galloping Herds” and was discovered in France in 1940. When talking about murals, you may think about symobls painted on walls during World Wars. Street art often is a form of protesting - against the government, against racism or any form of intolerance. During wars it also is a form of showing solidarity and unity. Nowadays it is important to seperate graffiti and street art. People doing graffiti focus mostly on their groups and others that paint. They don’t care that much about the audience. Street art on the other hand is supposed to attract attention and make people wonder about its topic.

https://rynekisztuka.pl/2015/03/25/street-art-poczatek/