Giuseppe Verdi's operas, such as "Nabucco" and "La Traviata," often contained political messages and were seen as subversive by the authorities.

Bob Dylan's song "Masters of War" was a powerful anti-war protest song that criticized the military-industrial complex and those who profited from war.

Joan Baez was a folk singer and activist who performed at many Civil Rights Movement rallies and events, using her music to raise awareness and support for the cause.

The Woodstock Music and Art Fair, also known as Woodstock, was a three-day music festival that attracted over 400,000 people and became a symbol of the counterculture movement.

Marvin Gaye was a soul singer and songwriter who was known for his political activism and his support for the Black Panther Party. His song "What's Going On" was a powerful protest song that addressed social and political issues.

The Sex Pistols' album "Never Mind the Bollocks, Here's the Sex Pistols" was a controversial and influential punk rock album that challenged social and political norms.

Peter Gabriel was a rock singer and songwriter who was known for his anti-apartheid activism and his song "Biko," which was written in tribute to the South African anti-apartheid activist Steve Biko.

The Wall was a music festival that was held in Berlin in 1989 to celebrate the fall of the Berlin Wall. It featured performances by many famous musicians, including Roger Waters, David Bowie, and Bruce Springsteen.

Tom Morello is a guitarist and songwriter who is known for his political activism and his support for the Occupy Wall Street movement. He is a member of the band Rage Against the Machine, which is known for its politically charged lyrics.

Beyoncé's song "Formation" was a powerful and controversial song that addressed issues of race, feminism, and police brutality. It was released in 2016 and became an anthem for the Black Lives Matter movement.

Neil Young is a rock singer and songwriter who is known for his political activism and his support for the Standing Rock Sioux Tribe. He released a song called "Indian Wars" in 2015 to raise awareness of the tribe's fight against the Dakota Access Pipeline.

Coachella is a music festival that is held in Indio, California every year. It features performances by a wide variety of artists, including rock, pop, hip hop, and electronic music.

Lady Gaga is a pop singer and songwriter who is known for her political activism and her support for the Me Too movement. She has spoken out against sexual assault and harassment and has used her platform to raise awareness of these issues.

Childish Gambino's song "This Is America" was a powerful and controversial song that addressed issues of race, violence, and gun control. It was released in 2018 and won the Grammy Award for Song of the Year.