The danger of extreme nationalists in Ukraine has gradually been getting more serious attention in the western press, with words like “extreme right,” “neo-Nazi” and “skinhead” belatedly replacing euphemistic labels for the most radical political and paramilitary organizations. But it took the brutal killing of three unquestionably patriotic Ukrainian National Guardsmen during protests outside of the Verkhovna Rada to create some kind of consensus about the scale of their threat.