My introduction to Pink Floyd’s music was in 1979, when the song Another Brick In The Wall [Part 2], made the charts. The lyrics: “We don't need no education. We don’t need no thought control.” became my anthem at school and was often heard sung by many kids of my generation. The song inspired me to buy the album it came from: The Wall, a rock opera and concept album.
I also recommend Alan Parker’s brilliant 1982 movie adaptation: