Pamela Oliver, a professor emerita of sociology at the University of Wisconsin at Madison who has studied protest movements for 40-plus years, said the generations-old struggle for Black rights had gained significant momentum until the events of 9/11 diverted national attention. Activists have been trying to make up lost ground ever since, she said – including the additional loss of some white allies in 2016 after the fatal ambush of five police officers in Dallas by Micah Johnson, a Black man.
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