Adding unsourced categories  

Please read WP:Categorization#Articles. "Categorization of articles must be verifiable. It should be clear from verifiable information in the article why it was placed in each of its categories."

Your recent addition of categories to several articles fails WP:Verifiability. For example, Nation of Islam doesn't mention Black Power, let alone cite a reliable source describing the organization as related to the Black Power movement. So your addition of Category:Black Power was inappropriate. 

Please follow the categorization guideline in the future. Thank you. 2601:14C:0:F6E9:71B2:6F01:9EB8:B237