They could have taken away the John Lennon's bust. They can rock different. Peace and love will remain.
"The Lennon Wall is a wall in Prague, Czech Republic. Once a normal wall, since the 1980s it has been filled with John Lennon-inspired graffitiand pieces of lyrics from Beatles songs.
In 1988, the wall was a source of irritation for the then communist regime of Gustav Husak. Young Czechs would write grievances on the wall and in a report of the time this led to a clash between hundreds of students and security police on the nearby Charles Bridge. The movement these students followed was described ironically as "Lennonism" and Czech authorities described these people variously as alcoholics, mentally deranged, sociopathic, and agents of Western capitalism.
The wall continuously undergoes change and the original portrait of Lennon is long lost under layers of new paint. Even when the wall was repainted by some authorities, on the second day it was again full of poems and flowers. Today, the wall represents a symbol of youth ideals such as love and peace."