He was killed in a Russian airstrike!
Don't get fooled by the Russian propaganda. 90% of the Russian airstrikes in Syria are against the civilians and the rebels. Only the remaining 10% is against the Al Qaeda and the ISIS. The Russian aim is to support Assad, and not to fight the ISIS.
Well ofcourse they should be supporting Assad. Why wouldn't? This is pretty much the same situation, somewhat, as it was with Gaddafi and Algeria.
Assad was elected after he rigged the presidential polls. He has used barrel bombs and artillery against the civilian targets, and has rejected all the offers for compromise. He is actually responsible for the rise of the ISIS in Syria.
Fo you Pedjeng.
Social Justice Warrior: A pejorative term for an individual who repeatedly and vehemently engages in arguments on social justice on the Internet, often in a shallow or not well-thought-out way, for the purpose of raising their own personal reputation. A social justice warrior, or SJW, does not necessarily strongly believe all that they say, or even care about the groups they are fighting on behalf of. They typically repeat points from whoever is the most popular blogger or commenter of the moment, hoping that they will "get SJ points" and become popular in return. They are very sure to adopt stances that are "correct" in their social circle.