Proposals of Khazar origins have been made regarding the Bukharan Jews, the Muslim Kumyks, Kazakhs, the Cossacks of the Don region, the Turkic-speaking Krymchaks and their Crimean neighbours the Karaites, to the Moldavian Csángós, the Mountain Jews, Subbotniks and others.[19][20][21] The late 19th century saw the emergence of the theory that the core of today’s Ashkenazi Jews are descended from a hypothetical Khazarian Jewish diaspora which migrated westward from modern-day Russia and Ukraine into modern-day France and Germany. Linguistic and genetic studies have not supported the theory of a Khazar connection to Ashkenazi Jewry. The theory still finds occasional support, but most scholars view it with considerable skepticism.[22][18] The theory is sometimes associated with antisemitism[23] and anti-Zionism.[24]