Tactic Known As "Black Bloc" That Aims To Unify Demonstrators' Efforts And Hide Their Identities. Anti-fascists and the Black Bloc Tactic Originated In Nazi Germany and Resurfaced In United Kingdom in the 1980s. Large Numbers of Antifa Activists First Appeared In The United States Anti-World Trade Organization Protests In 1999 in Seattle, Then In 2010 At The Occupy Wall Street Movement.
