Tim Wise is among the most prominent anti-racist writers and activists in the U.S. He has spoken to over 300,000 people in 48 states, and on over 350 college campuses. Wise has provided anti-racism training to teachers nationwide, and conducted trainings with physicians and medical industry professionals on how to combat racial inequities in health care.

He has trained corporate, government, and law enforcement officials on methods for dismantling racism in their institutions, and has served as a consultant for plaintiff's attorneys in federal discrimination cases in New York and Washington State.  - Ncore Website

I am a fan of his work. When I first heard him I was so impressed with the passion with which he spoke, but more importantly with the details of his lectures. Some of what he said seemed obvious, but there was so much that I never thought of before, and I was happy to learn something from him. The talk which I linked below is a few years old, but it represents the main theme and message of all his talks.