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

Upside-down American flags flown outside Monrovia Public Library

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

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

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

Man Flies American Flag Upside Down

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

Upside down American flags in a West Palm Beach neighborhood

An American flag flying upside down in Springfield has people on edge

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

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

Cape Homeowner Flying Flag Upside Down

Upside down American Flag leaves neighbors upset in Naples

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

Family flies American Flag upside down

Man flies flag upside down in Palm Bay

Mixed reviews on upside down flag

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

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

Former Marine Cited For Taking Upside Down Flag