City of Columbus issued the following announcement on Apr 11.
April is National Child Abuse Prevention Month, focusing on the importance of families and communities working together to prevent child abuse and neglect. Each of the pinwheels on City Hall's campus represent our responsibility to be the winds of change. Let's work together to spot the signs of neglect and abuse and end it in our city.
The Center for Healthy Families / Franklin County Children Services
Original source can be found here.