Been gone for the weekend, and just saw this.
Poroshenko has been trying to undercut the power of the Nazi mobs for a while now, but this sports bar shoot-up seems to be bringing things to a head.
Twitter says the “OUN” wierdos have been “called to Kiev” tonight, and will be marching with Right Sector to parliament on Monday morning. Could get “interesting”.
I find interesting that it's really difficult to google English items on the topic, excluding the Sputnik, Russia Today, etc., while there's a lot about it in the both Russian and Ukrainian media.