> Caucasians are a category that can be selected from that list too, right?

Not according to Gruber[1]:

UPDATE: Their filter lets you screen out Asian-Americans, African-Americans, and Hispanics, but it doesn’t let you screen out white people? How did anyone at Facebook think this was a good idea?

[1]https://www.propublica.org/article/facebook-lets-advertisers...

I don't use FB (privacy concerns and commercialization of human beings) so give the interested source benefit of the doubt.

So FB has made an oversight. The engineers and designers should do the politically correct thing here and add white people as a category. Most importantly, the special creams advertisers...

That doesn't really solve the problem of them explicitly creating a platform for discriminatory advertising.

This is also the sort of thing where I have to ask, how many people of color were apart of the design and implementation of this functionality?

> Ethically, there is nothing wrong with this system if the exclusion can be applied equally to any ethnic group.

That is only shifting the responsibility to the person clicking (or not clicking) the checkbox.

... thereby exonerating Facebook from the racial discrimination imputed to its advertising problem.

Are you really suggesting that platform providers are fully accountable for the abusive use of their services?

It shouldn't be an option. So yes, they are accountable.