Who are the real domestic terrorists and radical hate groups?

Is this the face of domestic terrorism?

Sometimes Satan is exposed as the liar and murderer he is. Sadly, that exposure often comes from those whom he uses to do his dirty work.

After the murder of United Healthcare CEO, Brian Thompson tens of thousands of Satan's sidekicks began dancing on Thompson's dead body and rejoicing over the evil done to him.  

"Within seconds of the news breaking, people online began celebrating. A Facebook post by UnitedHealthcare about the CEO's passing was met with over 23,000 laughing emojis before it was taken down. "Health insurance companies are parasites siphoning blood money from the sick, dying and injured,” one user posted. “I'm only surprised it hasn't happened sooner.” [Source from one who was among those celebrating]

 What kind of people do that? And why?