treason
coup d'edat
coup d'état
Because the group has Socialist leanings, and has called for the overthrow of the US government.
Coup
A "coup."
people have the right to overthrow an oppressive government
groups that wanted to overthrow the government (apex)
Totalitarian
ministers
A bureaucracy.
Overthrow means a removal from power/ to put an end to. The rebels chose to overthrow the government. Be creative and think up your own sentence.
It is a civil war. If you engage in war to overthrow the current government, it's called a revolutionary war. If it's a war between people in the same country, it's called a civil war. If it's a group of people fighting against the government, it's called a resistance movement or a liberation movement. If the small group happens to engage in guerrilla tactics against their own government, it's also called a guerrilla war.