What this guy is trying to say is- it’s not enough to not be a “racist”. These days since 500 years ago, you need to be actively anti-racist. That means doing things other than your regularly scheduled program. Read a book. Have a difficult conversation. Volunteer. Get in the streets. But don’t take my word for it. This dude is a Christian.
Feeling strongly that you’re not a racist isn’t enough. Avoiding using overtly racial stereotypes and epithets isn’t enough. Not being “prejudiced” isn’t enough.