When the flag of the United States or the flag of Illinois is flown at half-staff, it signifies a period of mourning or respect, typically observed upon the death of a prominent individual or to mark a national tragedy. The lowering of the flag is a visual expression of grief and solidarity. For example, flags might be lowered statewide in Illinois to honor a fallen law enforcement officer or a state official who has passed away.
Lowering flags to half-staff serves as a visible reminder of significant events and allows citizens to collectively acknowledge loss and demonstrate unity. Historically, this practice has been used to express condolences to other nations during times of crisis. It provides a powerful symbol of remembrance and allows the community to publicly acknowledge and share in the grief.