If you run an ad campaign at a targeted audience, why can't the campaign have a specific page marker (campaign=only-christians (coded as AB1)) that reveals pers

If you run an ad campaign at a targeted audience, why can't the campaign have a specific page marker (campaign=only-christians (coded as AB1)) that reveals personal data? We never had a choice of an alternative model. The monopolies involved demand privacy for their services. You can serve ads without targeting or target content instead of audience: broadcasters have had to do this for a long time and it can be very profitable. It is evil and bad to profile people and worse to force it on them by abuse of market position. Audience targeted ads are a form of discrimination. Some of the data Google harvests has the potential to get people killed. For instance, when Google are gathering data about who uses membership areas of political sites, frequent sites for certain sexualities, using regulator pages to blow the whistle, etc. Google doesn't have a right to collect this data. It's evil.