Why did surrealist pieces become popular during the 1920s and 1930s?

Surrealism is a type of art that opposes reality and looks very bizarre and almost dreamlike. This type of art became popular in the 1920s and 1930s, and one reason for that was because of the Great Depression, people were focused on politics and economics and occasionally needed something to take their mind off of reality, and surrealist pieces were perfect because they are anything but real.