As Russia moves 10,000 troops to the Ukrainian border and Crimea prepares for a secession referendum, tension remains high all over Ukraine—especially in the east.On the night of Thursday, March 13, VICE News reporter Robert King captured this scene on the streets of Donetsk, where a large group of pro-Russian activists attacked a group of pro-Ukrainian demonstrators calling for unity.Subscribe to VICE News.Follow VICE News on Twitter.Like VICE News on Facebook.