Although the article is directly related to the LGBT community, this can happen to anyone, whether straight or gay, christian, catholic, jew or buddhist, in areas where ISIS resides.
As for the people standing below watching, I wonder if they REALLY support their actions. Hear me out. You're standing below and you watch someone get thrown off a building by ISIS. If the person is not dead, the people watching below are expected to finish the job (stoning). If they walk away, protest, or choose not to support ISIS, what happens to them? They are also killed. What other action are they supposed to take? Just by the picture alone, the people watching are in no way powerful or skilled enough, nor do they have the money to "fight back" against ISIS. They really have two options: 1) support ISIS/do as their told and stay alive or 2) protest ISIS/disobey orders and die. Not many options. Obviously, I am not condoning what the people watching are doing. But if I was in their shoes, would I pick option "2?" I don't know. I mean, of course, most getbiggers would say, "Hell yeah, Id take up arms against ISIS. I'd karate chop them in their head, and go Ramboo on their ass." But if you grew up in the M.E., and were one of the spectators in the crowd, would you really have the guts to start a revolution?