I would use some language that helps convey aspects of those themes as well. For example, the use of guilt and manipulation play into those topics as well.
1. Authority figures within Arthur Miller's The Crucible allowed their hopes of maintaining great power interfere with their care for humanity, the purpose of the very offices to which they were appointed.
2. Fear manipulated the town of Salem during Arthur Miller's The Crucible causing a mania that cost people their very lives.
Are you writing a thesis statement in two sentences? What is the purpose of your assignment?