Nanotech:

Is a person showing love when they do not tell a brother or sister that what they are doing is life threatening?

The Christian who does not speak out against sin is negligent. He is shirking his duty to his brothers and sisters.

Agreed. And the bible tells us how to dela with this situation: "If he refuses to listen to them, tell it to the church; and if he refuses to listen even to the church, let him be to you as a Gentile and a tax collector." (Matt. 18:17)

Nowhere does it say to insult him or de-humanise him by using egregious language. Was it agape that inspired your last post about "queers"?