His review described the band as a "runaway train ... so powerful, they're the first new group to come along who can really scare the Sex Pistols shitless". On 29 August, the Clash and Manchester's Buzzcocks opened for the Sex Pistols at The Screen on the Green, the Clash's first public performance since 4 July. The triple bill is seen as pivotal to the British punk scene's crystallisation into a movement, though NME reviewer Charles Shaar Murray wrote, "The Clash are the sort of garage band that should be speedily returned to the garage, preferably with the motor still running". Strummer later credited Murray's comments with inspiring the band's composition "Garageland". In early September, Levene was fired from the Clash. Strummer would claim that Levene's dwindling interest in the band owed to his supposedly extravagant use of speed, a charge Levene has denied. Levene and Lydon would form Public Image Ltd. in 1978. On 21 September, the Clash performed publicly for the first time without Levene at another seminal concert: the 100 Club Punk Special, sharing the bill with the Sex Pistols, Siouxsie and the Banshees and Subway Sect. Chimes left in late November; he was briefly replaced by Rob Harper as the Clash toured in support of the Sex Pistols during December's Anarchy Tour. The Clash were putting forward a radical left-wing message in their songs and interviews. They sang about social problems, such as career opportunities and unemployment, and the need for people to fight back against racism and oppression. "We’re anti-fascist, we’re anti-violence, we’re anti-racist and we’re pro-creative." (Joe Strummer, 1976) However, “I don’t believe in all that anarchy bollocks!” (Joe Strummer, 1976) "The important thing is to encourage people to do things for themselves, think for themselves and stand up for what their rights are." (Mick Jones, 1976) The confrontation between Black youth and the Police at the Notting Hill Carnival in 1976, was important in the development of The Clash’s political stance. It directly inspired Joe Strummer to write "White Riot". Images of the Notting Hill Carnival riots would appear as The Clash’s stage backdrop, the back cover of their first album and be reprinted on badges and The Clash t-shirts. Punk outbreak and UK fame: 1977–1979 By the turn of the year, punk had become a major media phenomenon in the UK. The New Musical Express declared "1977 is the year of The Clash."