Koo Sze-yiu

Koo Sze-yiu
古思堯
Koo in 2022
Born80–81
OccupationActivist
Years active1960s–present
Known forMultiple convictions over protests
Political partyMacao Federation of Trade Unions (until 1980s)
MovementBaodiao movement
Maoism (until 1989)

Koo Sze-yiu (Chinese: 古思堯; born 1945/1946), also known by his nickname "Long Beard" (長鬚), is a Hong Kong activist, known for being jailed for 12 times over his protests. A former Maoist, Koo became anti-communist after the 1989 Tiananmen Square protests and massacre.