Ukraine crisis: Is conflict fuelling far-right threat?
The deaths of three members of the national guard in an explosion reignited a debate over what some see as the potentially damaging influence of the country's far-right parties and volunteer militias fighting in the country's east.
More than 140 others were wounded in the blast, apparently caused by a grenade, during a demonstration against plans to give more autonomy to the country's Russian-supported separatist regions.