But she has to be the bad guy so for no fucking reason and almost totally out of character she blows up a building with people in it ( the people were basically cops though so that hardly makes her a bad guy)

The thing that really pissed me off about that bit was that we had just seen how those people holding back supplies and food were resulting in the refugees dying. Her mother figure / friend that passed, died of tuberculosis from the conditions the refugees were subject to. But because it wasn't direct visible physical violence, Karli's actions weren't framed as a defensive move against the oppressors that killed her friend and were going to continue harming the remaining refugees.