I agree that it's primarily a political problem, and those who are dying today are both Tutsis and Hutus.
There is a nuance that I want to bring in. There is a historical antecedent of ethnic cleavages, and because the current government, or at least its leadership, is issued from victims of a former genocide in 1972, you begin to sense the politics of revenge, and that revenge can take ethnic forms.
Unlike Rwanda, where the population participated in a genocide, I don't think that scenario is possible in Burundi. When you hear the hate speech—and that is a clear indication of something we should be careful of—that is made by leading officials of this government, then there could be incitements to have ethnic-based violence. Although it is primarily a political problem, it has possibilities of deteriorating into an ethnic aspect, as well.