Up until now my tentative understanding is that kids being made to wear red shoes are those who have been marked for sacrifice. kind of like in the movie Apocalypto, they painted the victims blue before sacrificing them. (In some of these pedo art photos on Instagram, you will also see people painted blue… hint hint).
But I have another theory now: That the cult might be making kids wear red shoes made from the skin of other kids after participating in one of the rituals where one child is made to kill another. That type of thing is mentioned throughout the SRA literature.