Another brick in the wall

1. What's the meaning behind another brick in the wall?
2. Was another brick in the wall banned?

What's the meaning behind another brick in the wall?

He is saying that authority figures are the peoples' bricks in the walls. The deep meaning of the song is that the teacher actually represents the government and the students are the people. The government doesn't let people do what they want and the government wants to control everyone.

Was another brick in the wall banned?

The single, as well as the album The Wall, were banned in South Africa in 1980 after it was adopted by supporters of a nationwide school boycott protesting instituted racial inequities in education under apartheid.