@revelette2,
Spy on your family and friends, because there's a perceived potential that they may harm you!
Why the need to spy on our friends, our allies? Trust begets trust; distrust begets distrust.
Why would you need to spy on your family and friends? There's no good reason to do so, because they are family and friends who we support through thick and thin.
The possibility that they will become our enemy is zero until such time they prove by their actions they can't be trusted.
Spying on family is not acceptable if you trust them. If not, you have a problem with trust.