Multiple protests of this incident of police brutality have been held, and the Chicago Police Department has been investigated over its use of aggressive and hostile tactics. And it appears this increased scrutiny has helped - police shootings and civilian complaints have decreased:
Complaint counts have been declining since 2012, but starting in mid-November 2015 — about two weeks before the video was released — complaints against police dropped at a rapid rate.You can view data for yourself, through the Invisible Institute, a journalistic production company on the South Side of Chicago that promotes transparency from public institutions, including the police.
Police shootings have shown a similar decline. From the month in which the McDonald video was released through April of this year, the annual rate of shootings has remained lower than at any other point in our data, which goes back to September 2007. There have been four months since McDonald’s shooting in which there were no police shootings, something that occurred only twice in the seven years before the shooting.