always been considered the proper color to
symbolize mourning. Occasionally white
and/or purple have been associated with black,
but they are neither standard nor recommended.
Bunting, pull-downs, drapery, ribbons, etc. of
black are appropriate.
flags are not recommended since they
have also been used as a symbol of anarchism.
traditionally fly at half-staff as a symbol of
mourning, but there are circumstances
where this is inappropriate. When the length of
a flag staff, the permanent attachment of a flag
to a staff, or the existence of obstructions
such as shrubbery or a balcony make it difficult
attaching black ribbons above a flag is an
alternate mode of expressing mourning.
A ribbon twice the flag length and no more than
10% the flag width should be tied in a bow above
the flag and below the finial, such that the two
resulting streamers correspond roughly to the
flag length (see image at left).
Public buildings of all kinds should express
mourning only by the authority of appropriate
on public buildings in the United States
(half-staffing, draping in black) should be
undertaken only if the President issues an
executive order authorizing it.