FERGUSON, Mo. _ Police arrested four people and used pepper spray on protesters outside the Ferguson Police Department late Sunday as about 100 people gathered to mark the sixth anniversary of Michael Brown's death.
Ferguson police Chief Jason P. Armstrong said some people in the crowd tossed bottles, metal screws and wooden sticks at officers. Letters were ripped from the department's sign and paint was sprayed on the sign, the road and parking lot, he said.
Armstrong said the officers "made repeated announcements, via megaphone, to not throw objects at officers and to not enter onto the property of the police department."
