Well, for one thing I think it was the industrialisation of murder due to technological advances in transport and weaponry
Actually, the Armenian Genocide was pretty messy.
Of course it did help to have accomplices who would do the dirty work if the reward justified the loss of honour involved, but ultimately, steeping themselves in Armenian blood did not help Kurdish statehood one iota, because the Turks never had any intention of granting it once the dastardly deed was accomplished.
I believe by "Turks" you mean "the Ottoman government." Genocides are planned and executed by governments, not people --but of course, governments depend upon the collaboration of certain groups to carry out the massacres, if they do not create such groups themselves.
In this case, the ordinary laymen who were involved in the genocide readily joined hands for a common cause, i.e. Jihad. The beginnings of the Armenian Genocide were deeply entwined with Islamic causes, as in the Hamidian Massacres. While it's true that the Triumvirate --the masterminds of the genocide-- distanced themselves from traditional Islam when it suited their purposes, they were free to exploit the centuries-long Islamic hatred of minority groups.
A good analogy would be the relationship between Nazi Germany and the Church. While the Nazis were not particularly fond of the Church, as far as they saw the Church promoting a Jewish conspiracy to weaken the Aryan race, the Holocaust would not have been possible without the pathological cult of Judeophobia preached by the Church for over a millenium.
Back to my earlier point.. Islam has its own in-built fascism. Islam did not have to import Nazi ideology from the West at all, only collaborate with them against the common enemy.