'Antifa' (short for anti-fascists) is a decentralised, left-wing, anti-fascist and anti-racist political group composed of autonomous individuals. Antifa traces its roots back to anti-racists who mobilised in the 1970-80s in US to oppose members of Ku Klux Klan (KKK) and neo-Nazis. US President Donald Trump has designated Antifa a 'terror body' days after right-wing activist Charlie Kirk's murder.