All events require designated areas where it is safe to watch or participate in the event. One of the major concerns of outdoor event planners is how to keep individuals in the safe areas, and not overrun areas that may not be as safe or may violate the personal property of others.
For example, most parades that go through communities have floats or others in the parade throw candy or other prizes into the crowd. This may cause young children to move under barriers and seek a better spot to catch the candy, and thus move them into an unsafe place where they could be hurt or injured. A simple solution is to reduce the throwing distance by not permitting those on floats or other displays to throw candy or prizes. Instead if they would like to give candy or prizes to children or others in the crowd, require them to have trailing individuals walk along the safe zone and hand or toss the candy or prizes to those in the crowd.
Every event will have similar potential for the spectators to be invited or unwittingly move into unsafe areas. Careful thought and consideration should be given to assure that those that are involved in the event, either as participants or spectators should stay in safe areas. If fireworks are displayed, the discharge should stop if the crowd moves into the drop zone of the fireworks.