Whereas Shakyamuni Buddha accepted students from all walks of life, including the Untouchables who were born into the lowest echelon of the hierarchical Indian caste system, some so-called monastic teachers have told other monastics that they are ill suited for the monastic life.
Political infighting in Buddhist monastic orders past and present have led to monastics being overtly and covertly forced into becoming lay people. The force behind laicization varies. https://www.flickr.com/photos/costafederico/4987993988/in/photostream/
In historical China, the most egregious form of forced
laicization occurred under emperor Wu. He ordered the destruction of all things
Buddhist. According to Xu Liu’s records of history, the emperor “was soon able
to boast of closing over 4,600 monasteries, confiscating enormous tracts of monastery
land, laicizing 260,500 monks and nuns. . . . scriptures were burned and
priests were executed.”