A summary of the profound relationship of love and brotherhood between the Indian and Afro-American people, exemplified by their freedom movements can be found in the website for the celebration of India's 75th year of independence in Philadelphia, USA: https://www.indiafreedom75.org/
More information can be found in the following articles:
1. Gandhi and the African American Interpreters of Non-violence
https://www.mkgandhi.org/articles/Gandhi-and-the-African-American-Interpreters-of-Non-violence.php
2. ‘I shall not retreat’: Recalling Paul Robeson’s support for India’s freedom struggle
3. Gandhi's Connection with the American Civil Rights Movement
https://thewire.in/world/mahatma-gandhi-american-civil-rights-movement-connection