 White office blocks adjacent to Greenmarket Square were sprayed purple four stories high as a protester leapt onto the roof of the water cannon vehicle, seized the nozzle and attempted to turn the jet away from the crowds.One of the dyed buildings was the Cape Headquarters of the National Party.The historic Town House, a national monument (now known as a provincial heritage site), was sprayed purple and the force of the jet smashed windows in the Central Methodist Church.