It isn’t mining data to enforce laws. It’s to trap innocent people who post things that the feds don’t like. That way they don’t have to put themselves in danger going after real, violent criminals. They just have to arrest innocent people and proclaim that the arrest numbers are up.
It’s data mining to trip up people 20 years in the future. It’s preserved forever.
Who knows what political thoughts will be illegal in 20 years.
That would explain quite a few of their decisions wouldn't it?