Which of the following is NOT a technique for crowd control and dispersal?

Ignoring crowd presence is not a technique for crowd control and dispersal because it fails to engage with the situation or address the behavior of the crowd. For effective crowd management, it is essential to actively monitor and manage crowd dynamics. Techniques such as isolation and observation involve keeping a close watch on the crowd to assess potential issues, while the show of force can act as a deterrent to unruly behavior by displaying authority. Issuing a proclamation is a proactive measure that communicates rules or requests to the crowd, guiding their behavior. By contrast, ignoring a crowd does not contribute to managing it or preventing escalation. Effective crowd management requires awareness and intervention, making the other options more appropriate techniques.