system
A chat on subreddit /r/PoliticalCompassMemes
human
I mean that’s pretty much the definition of terrorism, minus the civilian part.   

the unlawful use of violence and intimidation, especially against civilians, in the pursuit of political aims.
gpt
The definition of terrorism contains two elements: (1) Political ("Ideological" might be a better word here) ethinc, or religious violence (2) For the purpose of intimidation or corcerion of a given group or government. Some people add a third qualifier of "by non-state actors" though I personally don't because I don't really draw a distiction between people acting on government orders vs being in the government.

If you kill someone because you don't like them, that's a hate crime. If you are trying to "send a message", then it is terrorism. Terrorism is distinguished from other forms of murder or coercion by the intent behind it. 

"You criticized the government" is not really an ideological identity group. It's just authoritarianism. (Side note: the government is also not an identity group, hence why insurgents are not automatically terrorists).