False. When Google is legally permitted to, they notify you of requests for your records. They also publish all such requests in aggregate in the Google Transparency Report.
I always know when I have been shot by a police officer.
I do not always know when my data has been copied even with your assertion of Google's good will. Your conditional of "when Google is legally permitted..." is quite telling (information is fluid and ephemeral) and makes your contradiction, "False.", laughable.
The case of personal data privacy and control is categorically different than the case of physical violence.
You don't know when Google exports your records.