There’s only a few seconds of footage in this BBC report:

http://www.bbc.com/news/world-europe-27083395

I think it’s either
– a false flag to discredit the separatists (as if their violence isn’t enough).
or
– some dumb kids.

Here’s a report of the leaflet being fake: http://www.dailydot.com/politics/ukraine-jewish-registry-fake/