Of course the Ukrainian Nationalists of the time were vehemently anti-Semitic.  They were also anti-everyone who didn't share their rabid form of nationalism - Poles, Russians, even other insufficiently-nationalistic Ukrainians - and the UPA (Ukrainian Independence Army) killed such people accordingly when it had the opportunity.

But Freeland cannot be held responsible for the actions of her grandfather.  He alone is responsible for his acts, not his distant offspring.