There have been numerous cases of anti-Armenianism in Azerbaijan throughout history. Between 1905 and 1907, the Armenian–Tatar massacres resulted in the deaths of thousands of Armenians and Azerbaijanis. According to the history professor Firuz Kazemzadeh, "it is impossible to pin the blame for the massacres on either side. It seems that in some cases the Azerbaijanis fired the first shots, in other cases the Armenians."