What is the main conflict in The Fixer by Bernard Malamud?

Bernard Malamud based The Fixer on the case of Mendel Beilis, a Jewish bookkeeper for a brick factory who was accused of ritualistically murdering a Christian child. With very little evidence against him, the Russian government pushed for the conviction of Beilis in order to justify anti-Semitic policies that were being enacted at the time. The novel's protagonist, Yakov Bok, also works in a brick factory, and he is charged, for no particular reason except being Jewish, for a crime just like the one with which Beilis was charged. As in Malamud's fictionalized version, the actual case occurred between 1911 and 1913 in the Ukrainian capital, Ki