This is where I fundamentally reject Tim Wise's premise (and that of similar-minded people).

We ought to, instead, be looking at racism on multiple levels: systemic (institutional or governmentally-supported), social (interpersonal or individually-inflicted), and cultural (group-based).

I touch upon this midway through my recent piece dissecting the concept of "political correctness" --

https://medium.com/the-bad-influence/how-i-define-political-correctness-d430f16459b0

It's an "AND/ALSO" scenario, *not* an "EITHER/OR" proposition.

Racism isn't "exclusively systemic" or "exclusively individual" or "exclusively between groups" -- it's all of the above, in different contexts and settings. And the different dynamics will require different solutions, based on such context.