Antifa是一个movement 而不是一个确定的组织，是很松散无政府的groups

According to wikipedia:

"Antifa (/æn?ti?f?, ?ænti(?)fɑ?/) is a left-wing anti-fascist and anti-racist political movement in the United States. It is highly decentralized and comprises an array of autonomous groups that aim to achieve their objectives through the use of both nonviolent and violent direct action rather than through policy reform."