Protesters clash with anti-riot police in downtown Washington D.C. during the inauguration day for Donald Trump as the President of the United States. MPDC (Metropolitan Police Department of the District of Columbia) policeman in riot gear throws a smoke bomb at the crowd. One man shouts "grenade!" while another shouts “don’t throw that at people!”. Crowds move away from smoke bombs. Protesters crowd the street opposite the policemen. Journalists and spectators use their smartphones to record and take pictures of anti-riot policemen at the intersection of K and 12th Street, NW.