Can popular music be a genuine force for political change?

There is a long history of popular music and politics, especially in the political expression of music. Through history we have heard songs which contain a very strong political theme throughout, however when we talk about the politics of music we don't necessarily mean music which sets about going against political institutions but a song which talks about some sort of struggle. Censorship has been a big problem is the music industry. Just as theatre, film and art can be censored, so are songs. In western democracies songs have been banned from receiving radio airplay due to their lyrical content by the radio stations or the government. Artists like Eminem have regularly had their music censored due to political reasons, along with Bob Marley's 'Stand up for your rights'. It is quite a complex subject to understand. The politics in music usually works through the clash of words and sound, or when the noise in music is the message.