What does it mean when you fly the flag upside down?

Upside-down American flags flown outside Monrovia Public Library

Upside down American flags in a West Palm Beach neighborhood

Upside-down American flag reappears as a right-wing protest symbol after Trump's guilty verdict

Photo of upside-down American flag at Justice Alito's home sparks controversy

Veteran flies American flag upside down to signal distress for Florida waters

Former neighbor disputes Alito's explanation of upside-down U.S. flag flying at his home

Americans display U.S. flag upside down in protest of Roe v. Wade decision

Man Flies American Flag Upside Down

Upside down American Flag leaves neighbors upset in Naples

Family flies American Flag upside down

The Upside Down Flag On My Channel...An Explanation

Mixed reviews on upside down flag

Upside-down US flag flew at Justice Alito's home after 2020 election, NYT reports

Neighbors still reacting to upside down US flag in re-election protest

Viewers still sounding off on upside down US flag

What Does an Upside Down Flag at SCOTUS Justice Samuel Alito’s House Mean?

Justice Alito's upside-down American flag sparks controversy

American flag stolen from veteran who flew it upside down in protest

Post Office flag flying upside down