I could phrase a hypothetical opinion two ways:
1) "I think abortion is wrong because I believe in the sanctity of life and that life begins at conception."
2) "Anyone who is pro-abortion is a baby murder."
In the first, a viewpoint is stated in a respectful manner. You may agree or disagree, but the speaker wasn't deliberately demeaning or hostile. In the second, the same opinion was expressed, but in an overtly hostile way.
If we'd like a plural society in which many viewpoints are exchanged, we have to continually challenge ourselves not to conflate the two when hearing or responding to someone else.
And I get it -- it's not easy when one is passionate about something, even when one is willfully trying not to knee-jerk.
But if I either speak disrespectfully, or assume that someone else is being disrespectful regardless of their actual phrasing, then we all end up in the gutter.