1. It shall be unlawful for any person to employ, use, or exhibit any child under sixteen years of age, or for a parent, guardian or employer to consent to or to refuse to restrain such child in engaging or acting: a. As a rope or wire walker, gymnast (except in a non-professional capacity or activity), rider upon a horse or other animal (except in a non-professional horse show), or as an acrobat, or upon any bicycle or other mechanical vehicle or contrivance unless a child performer permit is issued