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Answer:
Hurston's purpose in writing "How it Feels to be Colored like Me" is to assert her pride in being black. She pushes back against the idea, articulated by many of her black friends during the Harlem Renaissance of the 1920s, that segregation and racial discrimination harmed the black soul and needed to be addressed.
The Vietcong set up checkpoints around the nation, so that would've definitely been a literal and figurative roadblock to any refugees. Hope this helped.