A single father, he has been a member of the parent group of his daughter's class for three years. The class teacher sends notices, collects class fees, and praises outstanding students. I respond immediately every time. Until one time my daughter was pushed and injured by a classmate. I asked about the situation in the group, but a few active mothers said, "Single fathers just don't know how to take care of children" and "Trouble the teacher with such a small thing." After a few arguments, I found out that I was kicked out of the group by the group leader - the director of the family committee.