The Guardian, and a few other outfits in global media sold its readership very hard on the "Gadhafi killing his own people" fallacy to enable Islamist gangs to plunder and maim and kill and ruin the societal fabric of Libya (and a few southern neighbors). Since then, Libya is a wasteland, its inhabitants enslaved as a whole (as opposed to the few political (read Islamists) prisoners' under the Gadhafi dictatorship),…
Facebook has been around at scale for a short period of time so the total amount of harm it has done so far won’t compare to propaganda done by others but this should not detract from worry/blame/concern about Facebook. I won’t lay the FB hate aside as you put it because I see the great harm it can and does do. Humans are easily manipulated and Facebook can do this at an unprecedented scale.