Slavs
Slavs are the largest ethno-linguistic group in Europe. Present-day Slavic people are classified into East Slavs (chiefly Belarusians, Russians, Rusyns, and Ukrainians), West Slavs (chiefly Czechs, Kashubs, Moravians, Poles, Silesians, Slovaks and Sorbs), and South Slavs (chiefly Bosniaks, Bulgarians, Croats, Macedonians, Gorani, Pomaks, Montenegrins, Serbs and Slovenes).
Rusyns
Of the estimated 1.2 million people of Rusyn origins, as few as 90,000 individuals have been officially identified as such, in recent national censuses (see infobox above). This is due, in part, to the refusal of some governments to count Rusyns and/or allow them to self-identify on census forms, especially in Ukraine. The ethnic classification of Rusyns as a separate East Slavic ethnicity distinct from Russians, Ukrainians, or Belarusians is, however, politically controversial. The majority of scholarship on the topic considers Rusyns to be an ethnic subgroup of the Ukrainian people. This is disputed by some non-mainstream scholars and some other scholars from Czechia, Slovakia, Canada and America. According to the 2001 Ukrainian Census about a third of Rusyns in Ukraine speak the Ukrainian language, while others stick to their native form.