"Why can't we all just get along?"
With a general societal decline in civil discourse, why would invective be surprising? People in the 'meat world' get shot because someone 'dissed' them, real or imagined, so swearing at one another takes a relatively mild role in comparison.
Yes, it would be nice if people could express their opinions without resorting to mock severed heads or burning effigies, not to mention the physical attacks on those presenting a different viewpoint (Charlottesville, e.g.)--which lead to defensive action, and a series of counter reprisals which escalate and inevitably lead to someone getting hurt or the destruction of property, be that a few blocks of a city, construction equipment, or attempts to cause disasters by shutting valves on active pipelines.
When the language of personal discourse is coarse, rife with 'F' bombs and other invective, we are beyond discussion of issues, minds (emotions) are made up, and little, if anything will penetrate the limbic responses which ensue.
There is no reasoning with a mob, only the threat of overwhelming violence or other negative and direct impacts upon the persons of those perpetrating their particular violence will stay their hand.
Unfortunately, much of what passes as political discourse is often just braying groupthink, the intellectual equivalent of the mob in the streets. Many of the positions espoused betray a lack of consideration or even education about the issue at hand, without which, the position espoused is not rationally considered in the first place.
Ask a Liberal why they embrace a particular stance, and few will be able to answer beyond "feelings" at their most rational. Epithets follow.
But one must make the distinction between disagreement and incivility, between factual analysis and prejudice, and between seeing solid, reasoned, guidance as persecution or 'hate'. Without the fundamental honesty it takes to dispassionately consider carefully vetted facts, and not just cherry-pick, but all the facts, the conflict between reality and belief will remain unresolved.