Final answer:
The underlying causes of the Hough riots included frustration over racial injustice, lack of economic opportunities, and systemic inequalities in urban African American communities.
Step-by-step explanation:
The underlying causes of the Hough riots can be traced back to a deep sense of frustration and anger among African American communities regarding racial injustice and lack of economic opportunities. The Great Society's programs were insufficient to address the needs for good healthcare, job opportunities, and safe housing in urban African American neighborhoods. In many instances, the federal government and civil rights groups failed to produce significant results towards racial equality. Furthermore, the targeting of discriminatory businesses and symbols of oppression during riots highlighted the community's exhaustion with systemic inequalities. Radical ideas for obtaining equality started to appear more appealing to those disillusioned by the slow pace of change.