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

Upside-down American flags flown outside Monrovia Public Library

Man Flies American Flag Upside Down

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

Family flies American Flag upside down

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

Upside down American flags in a West Palm Beach neighborhood

Flag seen flying upside down at Supreme Court Justice Samuel Alito’s home

Upside down American Flag leaves neighbors upset in Naples

Cape Homeowner Flying Flag Upside Down

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

Man flies flag upside down in Palm Bay

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

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

American flags flying upside down at Cape complex

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

Veterans upset after Jackson Wink Academy flies U.S. flag upside down

Folks upset over upside down flags in NH

Post Office flag flying upside down

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