What's the most logical way to complete this passage?

Before Saturday's police shooting of an African-American teenager, Ferguson, Missouri, was known as one of hundreds of municipalities designated by a national nonprofit as a "Playful City USA," a place where children are supposed to have access to more opportunities to play in their communities. But the shooting death of Michael Brown, a college-bound 18-year-old, by a police officer has brought national attention to the mostly black community for another reason. Witnesses and residents say the young man was unarmed. Police say he tried to take an officer's gun. Authorities, citing threats and safety issues, have refused to identify the officer. Protests have turned violent. Tensions remain high after isolated looting incidents and dozens of arrests in the St. Louis suburb of 22,400.

At the same time, many
African-American-American families started to move to Ferguson from St. Louis and surrounding communities.