Final answer:
The question inquires about Mary Dyer's shift from being part of an accepted group to becoming part of a marginalized one, likely because of a change in belief or social affiliation. The change from 'us' to 'them' is a recurring theme in literature and history, representing the complexities of identity within a given society.
Step-by-step explanation:
In what sense was Mary Dyer one of "us" who became one of "them" is a question exploring the transformation or distinction between one group of people and another, based on beliefs, actions, or social standing. Mary Dyer was originally part of a Puritanical society but later became a Quaker, thereby shifting from being one of the 'insiders' to being viewed as one of the 'outsiders.' This shift often implicates the complex dynamics of religious affiliation and social identity during the colonial period of American history. The texts referenced suggest a setting where characters grapple with adherence to religious and social norms and sometimes face ostracization or severe consequences when challenging the established order. Mary Dyer was initially part of the Puritan community in the Massachusetts Bay Colony, which can be considered "us" in the context of the religious community to which she belonged. However, she later became one of "them" when she underwent a significant transformation in her religious beliefs and affiliations. Mary Dyer, originally a Puritan, later embraced Quakerism, a religious movement that emerged in England in the 17th century. The Puritan authorities in Massachusetts considered Quaker beliefs and practices as heretical and a threat to their established order. Mary Dyer's adoption of Quakerism led to her expulsion from the Puritan community, marking her as one of "them" in the eyes of the Puritan leadership.