It was a still from the movie, which came from a book by an eye witness. Her description of the evil that occurred is irrefutible and quite detailed.
No one denies the massive deaths resulting from the Ottoman Empire war with Armenia among others.-- especially from the actions of the Ottoman Empire against Armenians living in Turkey.
For decades Turkey denied the massacre ever occurred. Turkey Denial
"the Nationalist government based in Ankara rejected Turkish responsibility for the acts committed against the Armenian population." [from first paragraph in the link you provided]
I doubt that anyone holds modern Germany responsible for Nazi atrocities.
I see another thread about getting resolutions condemning modern Turkey for the actions of the Ottoman Empire.. I say again: we have enough problems, let Turkey and Armenia work this out. They are neighbors.
BTW, what the ruling AK Party is trying to do -- establish an Islamic republic and sharia law -- is not accepted by most citizens of Turkey.