How does one join Antifa

4 Why do they all dress in black?

Like other protest movements dating back to Cold War era West German anarchists, Antifa supporters will often dress all in black, sometimes covering their faces with masks or helmets so they can’t be identified by opposing groups or the police. It's an intimidating tactic – known as a "black bloc" – which also allows them to move together as one anonymous group. There are also offshoots - one Antifa group in Oregon said they also have a "snack bloc" of people who provide food and water for their allies during protests.

5. What tactics do they use?

Antifa look to disrupt alt-right events and far-right speakers. They use a variety of tactics to do this – including shouting and chanting and forming human chains to block off right-wing demonstrators. Some are unapologetic about their online tactics, which include monitoring the far right on social media. They also release personal information about their opponents online, commonly known as "doxxing" – they’ve gotten some alt-right supporters fired from their jobs after identifying them online.

Antifa groups also use more traditional forms of community organising like rallies and protest marches. The most extreme factions will carry weapons like pepper spray, knives, bricks and chains – and they don’t rule out violence.

6: How violent are they?

Their willingness to use violence marks out Antifa from many other left-wing activists, although the Antifa members we spoke to said they denounce the use of weapons and violent direct action. They said if violence does occur, it’s as a form of self-defence. They also make historical arguments to justify their position. For instance, they ask, what if opponents of the German Nazi Party had been more forceful in their opposition in the 1930s, could World War Two and the Holocaust have been averted?

Antifa have been directly and sometimes physically confronting the far right on the streets and, in some cases, they have been successful in postponing, cutting short or cancelling rallies and speeches up and down America.

7. Do women join Antifa groups?

Traditionally direct street action has been a mostly male domain, but significant numbers of women are members of Antifa groups and have been arrested at counter-demonstrations against the alt-right in California and elsewhere. Female members of Antifa groups told us they view the current administration as being anti-women. They point to White House policies on immigration, affordable health care, abortion rights and voting rights and say they disproportionately affect women and minorities. We spoke with Sunsara Taylor from the Antifa group Refuse Fascism who told us women are motivated to respond to "what hits them".