"shooting the wounded" is a term used for cutting off contact, ostracizing or other types of distancing yourself from people in your own group who have made mistakes, sinned, or just said something that was not politically correct
the idea is that if someone become inconvienant (wounded) you denounce them, cut them off, reject them (shoot them) rather then try to help them
one example from my own faith tradition would be Father Benedict Groeschel
he is a great priest and a noted psychologist and author
in an interview in 2012, he was asked about the abuse scandel in the Catholic Church, he talked about psycological reasons behind abuse, but he also mentioned, that he has seen young people, 14, 16, 18, go after and try to seduce priests, and that if the priest is going through some kind of nervous brakedown or other problems, this type of seduction can be very dangerous
well, after saying that, Fr. Groeschel was forced to retire early from his radio show and has been swept under the rug so to speak
he used to be very popular in Catholic media, mostly Radio but he also had numerous TV interviews and wrote many articles, now no one has heard from him because he pointed out something that was true, but did not go along with the politically correct narative
for the record, Fr.Groschel has never been acused of any kind of abuse, he is a respected priest and psychologist