Ukrainian speeker here
As some of you can know, a tense conflict is going on between "pro-russian" and Ukrainian military in Eastern Ukraine. The situation reflects in actions between "pro-russian" and "pro-ukrainian" trolls in social networks and comments sections of news sites (quotes are intentional since political vector doesn't always repeat geographical location). The quite common, often-occuring issue is that "russian" Facebook department blocks pro-ukrainian, anti-russian posts in Facebook by request of hordes of (assumingly) russian Facebook users, who report abuse or Facebook policy violation on such posts.
The actiual problem has two parts. First, it is believeed that there is organised group of pro-russian commentards that fills-in abuse requests which leads to automated (because there are many requests by different users) posts takedown. Second part of problem, described by some experts in Russia and Ukraine, is that Ukrainian government and part of Ukrainian society believes that "Facebook Russian office" is located in Moscow and is loyal to "russian" part of audience. They think (or say that that think) that Facebook should create a sub-division that will modereate Ukrainian segment of the posts independently from Russian segment. Since we talk about politics, they "think" about that quite loudly.
P.S. I live in Ukraine and I'm quite opposed to actions of (pro-)Russian rebels here, but I tried to write as un-oppinionated as I could, that's why so many quote signs here :)