Final answer:
From 1964 to 1968, there were 329 urban uprisings in the U.S., ignited by systemic social injustices and a lack of economic opportunities in African American neighborhoods, leading to the rise of the Black Power movement.
Step-by-step explanation:
During the "long, hot summers" of 1964-1968, more than 329 urban uprisings rocked America's cities. These uprisings were part of the turbulent racial and social changes of the time. The urban riots were a result of deep-rooted frustrations and were characterized by fierce clashes, with profound impact on businesses, communities, and the civil rights movement.
The Harlem riots in 1964 and the Watts riots in 1965 were notably destructive, resulting in significant loss of life and property, with most casualties being African Americans affected by police and National Guard actions. These events underscored the abysmal lack of healthcare, job opportunities, and safe housing available in urban African American neighborhoods. As a result, many African Americans sought solace in more radical ideas and movements such as the Black Power movement, prompting them to demand empowerment and political and economic self-sufficiency.