It doesn't matter WHY that happened.
Surrounding, heckling, intimidating, impeding a Jewish person... BECAUSE of the war, does not change antisemitism into NOT.
Similar to America creating casualties in Afghanistan while they went after Bin Laden. There were Anti-American demonstrations all over the world due to the casualties/ deaths caused by that war. Are you sayin that they were NOT anti-American demonstrations... because it was simply due to the war?
That doesn't make sense.
Antisemitism is antisemitism, REGARDLESS whether the reason or cause is pure hatred of Jews, sectarianism, war, whatever... Antisemitism is still antisemitism.