Belarusian linguist, politician and former leader (1999–2007) of the Belarusian National Front (BNF), a Belarusian opposition party. In 1988, he was one of the founders of the Belarusian National Front. Viačorka was head of programme documents commission and a member of the party’s central board. In 1995-1999 he was deputy head of the BNF. He is the founder and head of an educational non-governmental organization, the Supolnaść Centre and was head of the working group of the NGO Assembly of Belarus (1999–2000).