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by wils1245 3101 days ago
And the next day, those age-based ads will be replaced by other user attributes closely correlated with age.

A US Supreme Court case comes to mind, Batson v Kentucky:

https://en.wikipedia.org/wiki/Batson_v._Kentucky

In which it became illegal to dismiss a juror based on race. A simple, sensible fix, which most agree did very little to stop race based discrimination from juries. Doing so just became a bit more complicated.