Some places have regulations concerning how official flags may be displayed on government property or by government institutions, while private individuals may have more freedom.
So it is important not to assume that every upside-down flag displayed by a private driver is automatically illegal.
The message depends on the person
Perhaps the most important thing to remember is that symbols can have different meanings to different people.
For one driver, an upside-down flag may mean political protest.
For another, it may represent distress.
For someone else, it may simply be
