Serbian rebels massacred Muslims in premeditated, cold-blooded mass killings.

Evidence

This was seen in the violence that accompanied the uprisings themselves, with rebels massacring non-Christians, often in a pre-meditated and cold-blooded manner. The so-called First Serbian Uprising of 1804–13 involved large-scale massacres of the predominantly Muslim populations of the towns. In his account of the uprising, the famous nineteenth-­ century German historian Leopold von Ranke thus describes the Serbian rebels’ intentions, as they prepared to occupy Belgrade in late 1806: ‘Nevertheless, it is probable that even at this time all the Turks were destined to be put to death.’ The rebels massacred the Ottoman commander and defenders of the Belgrade citadel, after violating their own promise of a safe evacuation. — James Renton, Ben Gidley (eds.), Antisemitism and Islamophobia in Europe, 1031