Public and Private Penance (Responsa Maharam Lublin)

We generally think of confession and penance as either a private matter between a person and God, or as a matter between the perpetrator and victim of a wrong. But not that long ago there were forms of penance that were very public. What's the idea behind them, and what can they teach us about social healing today? We will be studying and discussing a series of responsa by Maharam Lublin. Here is a link to the responsa: https://www.hebrewbooks.org/pdfpager.aspx?req=1937&pgnum=39