tarashkyevich was a member of the underground communist party of west belarus (kpzb) in poland and was imprisoned for two years (1928–1930). also, as a member of the belarusian deputy club (беларускі пасольскі клуб, byelaruski pasol’ski klub), he was a deputy to the polish parliament (sejm) in 1922–1927. among others, he translated pan tadeusz into belarusian, and in 1969 a belarusian-language high school in bielsk podlaski was named after him.