The perception of it is what matters. Not the actual behavior which is typically analyzed and documented in the ways established by America's legal system and its rules of evidence.
In the New York Post, Aaron Short reports that, "City investigators found no bullying occurred at a Bronx middle school where a teenager [Noel Estevez] allegedly stabbed a classmate [Timothy Crump] to death last month, and cleared teachers of any suspicions." Here is the coverage.
Sure, those in the educational loop are off the hook. But, there is one dead young man. Another will spend his life under the shadow of this youthful crime. Could this have been prevented if there was an environment - home, school, third places - in which both the alleged bully and the alleged victim could express their hostilities and fears and have them resolved.
In rural villages around the world conflicts are resolved by community "wise people." They listen. They rule. That rule is complied with. Violence can be prevented.
Should our sophisticated society create those kinds of caring interventions?