Which statement regarding writing and self-expression during the Harlem Renaissance is best supported by key ideas in both Robinson's and Hughes's works?
1) Writing and self-expression during the Harlem Renaissance focused primarily on political themes.
2) Writing and self-expression during the Harlem Renaissance emphasized the importance of individual identity and personal experiences.
3) Writing and self-expression during the Harlem Renaissance were limited to a specific group of artists and intellectuals.
4) Writing and self-expression during the Harlem Renaissance were not significant in shaping African American culture and identity.