 At the end of the nineteenth century , the majority of the city 's population was Jewish . According to Russian census of 1897 , out of the total population of 66 @,@ 000 , Jews constituted 41 @,@ 900 ( so around 63 % percent ) . This heritage can be seen on the Jewish Heritage Trail in Białystok . The first Anarchist groups to attract a significant following of Russian workers or peasants , were the Anarcho @-@ Communist Chernoe @-@ Znamia groups , founded in Białystok in 1903 . The Białystok pogrom occurred between 14 – 16 June 1906 in the city . During the pogrom between 81 and 88 people were killed , and about 80 people were wounded . 
