Ever since Row v Wade was overturned, the method I've taken in arguments is to point out the now blatantly existing cases of misuse of private data to prosecute people. Many people know about the news now about how people have been arrested and convicted because of phone data that should have been private.
I haven't had this argument very often though, so so far there aren't indications as to its effectiveness. We'll have to see how it turns out.
>>chrisn+(OP)
EFF did a talk on this at Def Con, and yea the amount of digital tracking in your life can be brought to bear by the power of the state is pretty terrifying.
Your car, your phones, other people's phones. It's all documenting your life and has few rules in the US.