And yet they have a Jewish president and a Jewish prime minister. Perhaps this group is not representative of Ukraine as a whole?
I'm going to have to ask for a source here. Jews formed ghetto polices, and Sonderkommando units, that's true. But that was done under duress in terrible circumstances, and certainly isn't "fighting".
Googling, there is also an interesting article here: https://www.tabletmag.com/sections/arts-letters/articles/ell...