Final answer:
Segregation in the public transportation system was a significant issue for black Americans as it hindered their access to equal rights and opportunities.
Step-by-step explanation:
Segregation in the public transportation system was a hot topic for black Americans because public transportation was their only way to get to their workplaces. African Americans heavily relied on buses to travel, and the discriminatory policies of segregating seating prevented them from accessing equal rights and opportunities. The Montgomery bus boycott, for example, was sparked by Rosa Parks' refusal to give up her seat to a white passenger, highlighting the broader issue of racial discrimination in the United States at the time.
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