Escort generally includes the idea that the escort is for protection. What the Texas people did was for harassment or intimidation as vehicles can be used as deadly weapons. It can be further defined as menacing as a deadly weapon when used in a threatening manner becomes a criminal act. Intent can be determined by the use of threatening language or obscenities, which apparently was the case. The persons involved in this particular “escort” may find themselves indicted for violating Federal Criminal acts.
That is roughly a summary of the “legal” description of the behavior demonstrated by their group “escort” actions.