A pompous troll. Someone who, in their dotage, envokes views on race, gender politics, or popular culture in desperate hope for attention. Usually a formerly great mind, communicator and/or broadcaster who has run ungraciously to insignificance. This is a self-defined term for an elderly person desperate for relevance.
For example, this post
“That Brian Edwards used to be amazing. But since he’s taken to elderly pompous trolling, he describes himself as an Agent Provocateur”
A non-Caucasianperson who carries out acts against their own or other marginalized communities using white supremacist tactics. Plural: Agents of White Supremacy