If the newspaper was somehow able to be physically manifested by or perceived only by white people, or people under 30, or in some way that excluded people of a

If the newspaper was somehow able to be physically manifested by or perceived only by white people, or people under 30, or in some way that excluded people of a protected class from ever seeing it if they knew about it and wanted to, then the newspaper should definitely be liable, as should the advertiser. The material difference between newspapers and facebook is that anyone is allowed to buy a newspaper, but someone of a protected class cannot view ads on facebook that are not targeted to them even if they want to, thus they are excluded.