Bob Dylan's 'Blowin' in the Wind' became an anthem for the Civil Rights Movement due to its powerful lyrics and message of equality and justice.

'El Pueblo Unido Jamas Sera Vencido' (The People United Will Never Be Defeated) by Sergio Ortega became a symbol of resistance against the Pinochet dictatorship in Chile.

Hugh Masekela, a South African trumpeter and composer, used his music to fight against apartheid and promote social change.

'Do You Hear the People Sing?' from the musical 'Les Miserables' became the unofficial anthem of the 1989 Tiananmen Square protests in China.

Joan Baez, an American folk singer, used her music to protest the Vietnam War and advocate for peace.

Pete Seeger's 'Where Have All the Flowers Gone?' became a symbol of the anti-war movement during the 1960s.

John Lennon's 'Imagine' became a global anthem for peace and unity, promoting a world without war, hunger, and greed.

'We Are the 99%' by the Canadian band 99% became a symbol of the 2011 Occupy Wall Street movement, representing the 99% of the population who are not part of the wealthy elite.

Bob Marley's 'Get Up, Stand Up' became an anthem for the anti-apartheid movement in South Africa, calling for unity and resistance against oppression.

'Do You Hear the People Sing?' from the musical 'Les Miserables' became a symbol of the 1968 student protests in Paris, representing the desire for change and freedom.

Paul Simon's 'The Sound of Silence' became an anthem for the anti-Vietnam War movement, expressing the disillusionment and despair felt by many during that time.

Helen Reddy's 'I Am Woman' became a symbol of the 1970s feminist movement, empowering women to embrace their strength and independence.

Marvin Gaye's 'What's Going On' became an anthem for the civil rights movement in the United States, addressing issues of poverty, war, and social injustice.

Nena's '99 Luftballons' (99 Balloons) became a symbol of the 1980s anti-nuclear movement, expressing fears of nuclear war and the fragility of peace.

Bob Marley's 'Redemption Song' became an anthem for the anti-apartheid movement in South Africa, calling for liberation and justice.