"Russian", is not a race. We should find another word for this kind of prejudice.
Why does it have to be insulting? Rather, why do you have to import shame from an unrelated activity to make your point? It seems to me like that trivializes racism and doesn't do very much to bolster this argument.
Otherwise known as appeal to emotions. I think I'm going to start finding examples of avowed racists who criticize lynching so I can do the 'not all racists' thing.