IMHO, I don't think so. Communicate it directly and if need be use physical force to explicitly communicate such behavior will not be tolerated against those unable to defend for themselves.
If law enforcement and the School Administration were half competent, they would ignore anything said by the family member to the cowardly punks and instead throw the book at not only the kids who did it, but their parents as well and very well publicize the entire affair so the parents, families and bullies were well ostracized from the community.
When the community fails to act against the bullies, the community is just as heartless and deserves no less condemnation.
http://www.clickorlando.com/education/25041229/detail.html
>>The day before the incident, his daughter was sitting near the back of the school bus, and new video obtained by Local 6 News shows a white object in the middle of the aisle of the bus. According to Jones and other students on the bus, the object was an unwrapped condom. The video shows a boy sitting behind James’ daughter getting up from his seat and picking the condom up. The video then shows him move back to his seat carrying the condom and tossing it onto the girl’s hair. As she struggled to pull it out, students aboard the bus erupt in laughter, the video shows.
Jones said the video explains why he reacted the way he did, threatening to kill students.