What is the fine-grained topic of the following text: The fatal shooting of Michael Brown on Aug. 9, 2014, in Ferguson, Missouri, set off a national wave of dialogue and protests, from the streets to social media, as people nation­wide grappled with myriad complex issues, including police use of force, race relations in America, and criminal justice reform. Only return the topic.
The fatal shooting of Michael Brown and its impact on dialogue and protests regarding police use of force, race relations, and criminal justice reform in America.