Summarize this content to 2000 words in 6 paragraphs FERGUSON, Mo. — A Ferguson, Missouri, police officer was critically injured outside the city’s police station during protests on the 10th anniversary of the fatal shooting of Michael Brown, a pivotal moment in the national Black Lives Matter movement, police said Saturday.Ferguson police chief Troy Doyle said Officer Travis Brown suffered a severe brain injury Friday after being knocked to the ground.“He is in an area hospital right now fighting for his life,” Doyle said.Two other officers also were hurt, one sustaining an ankle injury and another an abrasion.The team of officers went out to make arrests Friday for destruction of property at the police station, where protesters gathered to remember Michael Brown, the unarmed Black 18-year-old who was killed by Darren Wilson, a white police officer in 2014.Doyle said Travis Brown started with the department in January and previously worked for the St. Louis County Police Department.
