You also have to realize that for some people, they HAVE to convince another person of their position, and after they've beat the same dead horse for months, they can't stop themselves.
They beat the dead horse some more out of frustration, and start calling names, etc. because their opponent hasn't yet "come around" to their way of thinking.
But once you've told another person "the truth" or "admonished him" in his error/sin, you have a clear conscience in the matter. Members should be able to roll up the window and drive off, after they -- with their free will -- have chosen to reject your view on a matter.
What, do we have a right to harass people now? NAME ME ONE TIME when harassing someone caused a conversion. As a matter of fact, once you enter the "harassing" stage, the person becomes set in their ways, out of principle/stubbornness if nothing else.
God bless,
Matthew