Among other things, he claimed the officers used excessive force and fabricated reports to cover up an unlawful arrest.
4 Columbia police officers cleared in fight during arrest →
"I found the post offensive, and I thought I needed to stand with the community and say what the police department thinks about it," Chief Burton said at the protest, The Tribune reported. "It was insensitive at best, and provocative at worst."
Missouri police union announces 'Darren Wilson Day' on anniversary of Michael Brown's death →