Sketch from eyewitness photo ( #gouache #ink).A Syrian medical examiner holds a skull from one of the hundreds of mass graves discovered in the aftermath of the genocidal Assad regime.I am constantly thinking of my friend Mazen al-Hamada, murdered by Assad almost 600 days ago.I vow to do everything I can to keep his memory, and the memory of thousands of men, women, and children, whose lives were stolen by tyrants, burning brightly in the dark.