If you love people, you are going to be attacked for speaking truth, no matter how gently you speak it.  I've seen it happen, and I've been one of the aggressors myself. In Acts 7, Stephen spoke the truth, and the reaction he immediately got from those listening was, "But they cried out with a loud voice, and covered their ears and rushed at him with one impulse." (57)

Ever seen that happen? People refuse to listen? They ignore what you say, maybe cover their ears in a way, and attack you? In the end they attacked Stephen and,  "having fallen to his knees, he cried out with a loud voice, “Lord, do not hold this sin against them!” Having said this, he died." (60)

Expect to be attacked, even by God's own people at times, if you speak the truth. But no matter how vicious, use it as a chance to show Christ's very character—one of mercy, pity, and grace.