To everyone who displays an American Flag.
 

All American flags should be displayed at half-staff until sunset, Tuesday, July 19, 2016. This is being done as a mark of respect for the victims of the attack in Nice, France.

Only official ones:

As a mark of respect for the victims of the attack perpetrated on July 14, 2016, in Nice, France, by the authority vested in me as President of the United States by the Constitution and the laws of the United States of America, I hereby order that the flag of the United States shall be flown at half-staff at the White House and upon all public buildings and grounds, at all military posts and naval stations, and on all naval vessels of the Federal Government in the District of Columbia and throughout the United States and its Territories and possessions until sunset, July 19, 2016. I also direct that the flag shall be flown at half-staff for the same length of time at all United States embassies, legations, consular offices, and other facilities abroad, including all military facilities and naval vessels and stations.

My American flag has been at half staff for the last month. And my flag will remain there after the recent Baton Rouge assassinations.

When will it end? The next step is to fly my flag upside down as a signal of distress for our Country.