Facebook here is very "trigger happy" about removing posts that have even slight nationalistic flavor or cast just a shed of bad light on any minority - and most of middle eastern countries seemingly fall under that umbrella.
Have seen numerous screenshots of deleted posts and user accounts suspended for days or weeks, circulated on social media as examples of Facebook's overly eager execution.
A particularly egregious example was posts by one refugee from certain middle eastern country who simply documented the abuses she was subjected to, as a woman, and as a religious minority. She is a notable speaker at conferences and universities, telling her story. One of the post that got removed and had her penalized was screencaps of threats she received. Yes, posting screencaps of threats sent to her over Facebook by a third party got her penalized. All in all, many of her posts removed, her account subject to multiple suspensions, as far as I recall.
She apparently re-posted threats she got on FaceBook from unidentified Muslim signed as 'Osama J'. Then Facebook took that down because it was reported as not appropriate content. Then the whole thing was spun through Polish right-wing internet to provoke outrage in its readers by showing that even half-Syrian is silenced when she tries to show how bad the Muslim (immigrants) really are.
She never followed through with raising criminal charges against the person supposedly making threats, he also wasn't identified other than the initials "Osama J".
The whole thing looked like a fabricated ploy to provoke outrage in the right wing internet.
Polish internet is sadly rife with anti-muslim propaganda, that's been spun to position the society against the EU and broadly speaking western values. You can see that for yourself if you use Google Translate and go to the frontpage of Polish version of Digg/Reddit called Wykop.pl
At this point I think we can be entirely cynical about their motives. To the extent that there is any semblance of a moral dimension to their actions (perhaps someone can point to those occasions if they exist) it is probably still just a business decision in that they don't want to harm their brand.