The 100th anniversary of the start of the mass killings should be celebrated Friday . activists and academics oppose the use of the word ` ` genocide '' Most estimates of the deaths fall between 600,000 and 1.5 million .
The 100th anniversary of the start of the mass killings will be commemorated Friday . Turkey and others reject the use of the word `` genocide '' Most estimates of the deaths fall between 600,000 and 1.5 million .