Their songs tackled social decay, unemployment, racism, police brutality, political and social repression, and militarism in detail. Strummer was involved with the Anti-Nazi League and Rock Against Racism campaigns. He later also gave his support to the Rock Against the Rich series of concerts organised by the anarchist organisation Class War. The Clash's "London Calling" album was voted best album of the 1980s by "Rolling Stone" magazine (although it was released in late 1979 in the UK, it was not released until 1980 in the US).