Duchamp put his signature on an urinal in 1917. Magritte replaced people on "the balcony" with coffins in 1950. I don't even need to mention "las meninas" by Pi

Duchamp put his signature on an urinal in 1917. Magritte replaced people on "the balcony" with coffins in 1950. I don't even need to mention "las meninas" by Picasso, or Warhol paintings, etc. For 100 years, it's been standard practice for artists to copy, parody and work from others' works.