The New York Times covered the issue extensively 145 articles in 1915 alone by one count with headlines like Appeal to Turkey to Stop Massacres.
The Times described the actions against the Armenians as systematic, authorized, and organized by the government.
Indeed, there were Armenian nationalists who acted as guerrillas and cooperated with the Russians.
They briefly seized the city of Van in the spring of 1915.
But to Turks, what happened in 1915 was, at most, just one more messy piece of a very messy war that spelled the end of a once-powerful empire.