The Armenian genocide & factuality

The Armenian genocide took place at the beginning of the 20th century. Yet to this day, its history remains a subject of debate. What’s more, the historical facts about the mass murder are still not acknowledged by everyone. Today, denial of the genocide is deliberately used as a tool for polarisation. Some time ago, for example, leaflets full of historical disinformation landed in the letterboxes of people in Mechelen.

What are the historical facts about the Armenian genocide? Why does the disinformation keep resurfacing? And how is it that the leaflets were distributed simultaneously in several European cities?