What is an example of violent behavior in a crowd context?

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In a crowd context, physically violent acts towards bystanders clearly demonstrate an example of violent behavior. This type of action involves aggression that can lead to harm or injury, indicating a breakdown of order and safety within the crowd. Such violent acts can escalate quickly, affecting not only those directly involved but also bystanders who may become unintended victims.

The other options present scenarios that do not involve direct physical violence. Cordial communication indicates a peaceful interaction among crowd members, while using corporate yelling may involve loud communication but lacks physical confrontation, thus not categorizing it as violent behavior. Creating makeshift barricades is an organizational tactic, which also does not imply violence but rather a method of managing the physical space within the crowd.