Excellently put Raz!
Some say that arguments, opinions and points should be governed by:
Don't do unto others what you don't want others to do unto you.
But sometimes people like to be stalked or don't have a problem with gore or pornography so I say the above needs to go in tandem with:
Our liberty ends where the liberty of others begins.
Only that way conversations and points are made in a way that benefits everyone and doesn't end up in broken friendships.
I guess it boils down to "treat people with respect".
I don't need to be friend of you..or even like you..to act respectfully,. in a way, it's me respecting myself if i do :)
I would take this as far as saying respect is defined differently throughout the world (see man vs woman, European vs. Oriental cultures). Yes, we don't have to be friends or like each other but we need stop stepping over each other to make our point.