I noticed that Joel Stein seems to think that foul language, threats, and harassment are only practiced by alt-righters. He must have missed all of those death threats towards policemen and towards whites generally from #BlackLivesMatter social media following the deaths of Trayvon Martin and the various street thugs who've been shot by police officers.
I see far more truly abusive posts from the left than the right. The problem is, the left sees many factual statements as abusive. Such as pointing out that their so-called common-sense gun control laws would accomplish nothing to stop the mass shootings that spawn calls for such.