Many sites and sources are acknowledging that the original USA Today story was wrong, or at least badly researched, and that the primary source for any suggestion that the separatists were officially behind this move came from mis-translated interviews. The original Hebrew translation had the separatist leader denying his group was behind those shitty, despicable flyers, while an English translation of that story had him admitting they were behind them.

At this point, I think most observers agree it appears to be the work of random asshole thugs, and some are suggesting that some parties loyal to the Kiev government are behind the flyers, trying to foment unrest and to get people to back away from supporting the Russian-aligned groups. (Neetzan was the first person I saw on twitter who questioned the story and the translation, but now even the USA Today has altered its report.)

The Russians and their loyalists are committing a lot of terrible crimes in the region, and I'm sure they're capable of something like this. But in this specific case there seems to be a growing suspicion that the flyers are not the (official or endorsed) work of the separatist leaders. I'm surprised Adam hasn't updated his story to reflect the facts as they are now known, or at least the fact that USA Today is backing off its original reliance on the English translation of the story. But maybe he knows of sources I'm unaware of that have convinced him to leave his story as-is. I'm certainly not trying to white-wash the separatists or the Russians. But it helps no one if there is a feverish rush to judgment that later turns out to be untrue, or, even worse, manufactured. This is from ThinkProgress:

The original report from Novosti Donbassa said that the leaflet was passed out by "three unidentified men wearing balaclavas and carrying the flag of the Russian Federation" with the aim of causing a conflict, then "to blame the attack on separatists." The flyers were distributed in the name of the "People's Republic of Donetsk," the title that the pro-Russian separatists in the region have given themselves. They also bear the signature of Denis Pushilin, who has been referred to in reports from the region as the "people's governor."

In an interview with Ukrainian press, Pushilin confirmed that the flyers, marked with the emblem of his organization, were really distributed in Donetsk. But unlike various English translations, in the original interview with Ukrainian media, Pushilin not only rejected the content of the flyers, but also denied that his organization was behind their printing. "Some idiots yesterday were giving out these flyers in targeted areas," he said, claiming that he had never himself used the "people's governor" title the flyer bestows on him. Pushilin did not suggest who else may have been handing out the anti-Semetic flyers, but went on to criticize the original site for posting it online.