> a lot of companies have done things in the past that were not illegal at the time of action. However, those actions were later decided to be made illegal because the behavior was deemed to be antithetical to our values.

What you are saying is literally the opposite of hundreds of years of the rule of law.

If FB did break the law as written, then prosecute them for that in a fair trial by a jury of their peers, but yours (or anyone else's) personal feelings about "our values" should never be able to override the plain language of the law, especially retroactively.