For pronunciation and definitions of党 – see黨 (“community;fellow communitymember;gang;faction; etc.”). (This character is the simplified and variant form of黨).
Notes:
Simplified Chinese is mainly used in Mainland China, Malaysia, and Singapore.
This flag used by the Indochinese Communist Party, uses the simplified character, 党 (top right), instead of the traditional character đảng (黨). The photo says Đảng Cộng sản Đông Dương (党共産東洋; Indochinese Communist Party).