Is the government subjecting people to enhanced interrogation or torture?
Are they placing them in detention or prison?
Are people undocumented immigrants or illegals?
Is someone a <respectful term> or "just a <derrogatory term>"?
Is someone a freedom fighter, a terrorist, or a traitor?
To the Nazis, were Jewish people human or subhuman?
Can a given historical event be called a genocide?
To me it's pretty clear the words used to describe people and their actions influences how these people and actions are viewed and understood.
This is one reason why propaganda is so effective, and why violence often follows the dehumanization of certain groups of people, in which word choice tends to play an important role.