The concepts of tradition and traditional values are frequently used in political and religious discourse to establish the legitimacy of a particular set of values. In the United States in the twentieth and twenty-first centuries, the concept of tradition has been used to argue for the centrality and legitimacy of conservative religious values. Similarly, strands of orthodox theological thought from a number of world religions openly identify themselves as wanting a return to tradition. For example, the term "traditionalist Catholic" refers to those, such as Archbishop Lefebvre, who want the worship and practices of the Church to be as they were before the Second Vatican Council of 1962–65. Likewise, Sunni Muslims are referred to as "Ahl el-Sunnah wa Al-Jamā‘ah" (), literally "people of the tradition Muhammad and the community", emphasizing their attachment to religious and cultural tradition.