Why does the NYT exemplify "liberal bias" and why does it mean what it does?

****A photograph of a bleeding American Jew beaten and almost lynched by a Palestinian mob is published and captioned in the NYTimes as a Palestinian bloodied by an Israeli solder. It remains today as a tool of anti-Israel propaganda.****
http://tinyurl.com/4pgm
The Photo that Started it All
On the day the Intafada broke out, Tuvia Grossman was riding a taxi to visit the Western Wall. He was unwittingly thrust into the international limelight -- and nearly killed in the process.
On September 30, 2000, The New York Times, Associated Press and other major media outlets published a photo of a young man -- bloodied and battered -- crouching beneath a club-wielding Israeli policeman. The caption identified him as a Palestinian victim of the recent riots -- with the clear implication that the Israeli soldier is the one who beat him.
The victim's true identity was revealed when Dr. Aaron Grossman of Chicago sent the following letter to the Times: Regarding your picture on page A5 of the Israeli soldier and the Palestinian on the Temple Mount -- that Palestinian is actually my son, Tuvia Grossman, a Jewish student from Chicago. He, and two of his friends, were pulled from their taxicab while traveling in Jerusalem, by a mob of Palestinian Arabs, and were severely beaten and stabbed. That picture could not have been taken on the Temple Mount because there are no gas stations on the Temple Mount and certainly none with Hebrew lettering, like the one clearly seen behind the Israeli soldier attempting to protect my son from the mob.