Unjust laws exist shall we be content to obey them or shall we endeavor to amend them and obey them until we have succeeded or shall we transgress them at once Which of these rhetorical devices does T?

In this question, the rhetorical device used is anaphora, as it repeats the structure "shall we" to emphasize the different options regarding unjust laws. This repetition highlights the moral dilemma faced when confronting unjust laws and encourages the audience to reflect on their own stance. The use of parallelism in the phrasing also strengthens the impact of the choices presented.