Vilnius Region
Lithuanian attitudes towards ethnic Poles were influenced by the concept of treating them as native Lithuanians who were Polonized over several centuries and needed to return to their "true identity". Another major factor was the tense relationship between Lithuania and Poland about the Vilnius Region and cultural (or educational) restrictions on Lithuanians there; in 1927, the Lithuanian Education Society Rytas chairman and 15 teachers were arrested and 47 schools closed.