Doing research on shaming might be easy, or it may be challenging. Some authors will write about a certain kind of shaming (parent shaming, fat shaming, etc) while other authors may use words like "guilt," "blame, " "taunt," "ridicule," or "harass" in relation to their subject (example: mothers being harassed for breastfeeding in public).
When you start looking for sources, remember to try different words or phrases if you don't find enough material on your first attempt. It would be a shame to give up too soon.