This is why you should not trust ANYTHING that Google does. For many years, they have been reporting a variety of private citizens’ activities to the government.
IMO, this is just one more nail in Google’s coffin. I don’t use them and I don’t trust them.
The same is true of Facebook.
Or Apple or Microsoft.
The only way you are safe from such intrusions is to not use technology. If you believe either Apple or Microsoft are “safe” you are delusional.
Actually, Google is fighting National Security letters
http://www.pcmag.com/article2/0,2817,2417460,00.asp