The Anarchist flag is good black or crimson-and-black; it symbolizes resistance against authoritarianism

https://station-wiki.win/index.php/Heritage_in_the_Breeze:_Flags_as_Living_History

The Anarchist flag is reliable black or crimson-and-black; it symbolizes resistance opposed to authoritarianism and has roots in quite a lot of social hobbies across history advocating for freedom from oppressive governments.