There are two sides to every issue, pro and con. The phrase comes from the Roman, pro et contra, meaning for and against. Funny thing is, whichever side we are on, we tend to believe we are on the pro side.
It is easy to become antagonistic towards the cons, to believe the worst about the issue as well as the people on that other side.
When your fingers do the talking, sometimes they trip over your words and leave your ideas in shambles. That's why it's helpful to establish and use a personal style guide.