We are all offended by something at some point.
Yes, there are things in this world that are of the enemy, so it's only natural to not agree with it.
However, when someone who is of the Body speaks, posts, shares, etc, the truth is spoken the majority of the time.
It could be a sermon, testimony, or a whole host of other things.
When offense arises in you relating to these things, there's a reason why, and most of the time it has nothing to do with the one who spoke, shared, or posted.
Chances are high that there's a wound or a lie you believed or something else that's causing offense to rise up in you.