Which fact from tinker v. Does Moines court decision best supports the reasoning that the conduct of the student protesters was protected by the fourteenth amendment, which prohibits deprivation of life, liberty, or property

The fact that the silent wearing of the black armbands did not objectively cause any kind of disruption of the order required for the proper functioning of the school which is required to efficiently provide teaching to the students. Indeed, silent symbolic protests with a clear political message of opposition to other political and institutional views or actions do not disrupt teaching and thus are protected by the First Amendment.