Final answer:
The SNCC embraced black power, expelled white members, and allied with the Black Panther Party in the late 1960s.
Step-by-step explanation:
In the late 1960s, an already-established civil rights group that embraced black power, expelled white members, and formed an alliance with the Black Panther Party was the Student Nonviolent Coordinating Committee (SNCC). Influenced by Stokely Carmichael's militant stance on black power, SNCC underwent a shift in philosophy, rejecting its previous interracial composition in favor of black nationalism.
This approach aligned with the Black Panther Party's methods toward combating racial inequality and advocating for African American self-reliance and empowerment.