Was it balanced? Was it fair? Or was it 'fair and balanced' (either way)?
The viewer is left with the closing scene of murderous Christian Poles crucifying a Jew on a side of a barn. I think that's why they called it a thriller.
If you liked this film, you will most likely love this one: en.wikipedia.org/wiki/The_Birth_of_a_Nation
The portrayal of Poles and the blacks is similar in both films.