black history month color flag background with red, yellow, green, and black colors

emancipation tradition emancipator langston hughes maya angelou frederick douglass solidarity yellow green emancipating community pride african american color flag background heritage activism rosa parks ancestry equality legacy black history month liberation symbolism unity red emancipate civil rights movement freedom patriotism identity diversity emancipated harriet tubman emancipatory culture empowerment nationalism celebration blm martin luther king jr lives matter social justice malcolm sojourner truth colors