Final answer:
The truthfulness of the statement about engaging in arguments with a crowd is subjective and conditioned upon the situation. Maintaining public safety and seeking conflict resolution is generally advised, though there may be times when standing up to rudeness is necessary.
Step-by-step explanation:
The statement "When dealing with a crowd you should never engage in an argument with anyone unless they start making unnecessary and rude comments towards you" is subjective and context-dependent when it comes to its truthfulness. In general, it is advised to avoid arguments in a crowd to prevent escalation and maintain public safety. However, there may be situations where constructive engagement is necessary or where standing up to rude behavior is important for personal dignity or the well-being of others. In a crowd, maintaining calm and seeking conflict resolution can often be more productive than arguing. Having the skills in crowd psychology helps in understanding when it might be more effective to engage or not. In summary, it is generally a good practice to avoid confrontation in crowds, but there are nuances depending on the context and the nature of the confrontation.