The Turks Insist That There Was No Armenian Genocide

I wonder how they explain a Turkish official taunting starving Armenian children with a piece of bread in 1915.

I do not understand why Turkey continues insist that there was no Armenian Genocide, or why some Turks maintain insist that there was a genocide of Turks by the Armenians, but the only thing that they get from this behavior is a loss of credibility.

It's enough to make every decent human being quote Joseph Welch.<sup>*

*</sup>Joseph Welch is best known for an exchange with Senator Joseph McCarthy in which he said, "You've done enough. Have you no sense of decency, sir? At long last, have you left no sense of decency?"