Prunus × yedoensis

D.C. packed above and below with tourists filling phone memory with cherry blossoms.

civility instruction
In a ceremony on March 27, 1912, First Lady Helen Herron Taft and Viscountess Chinda, wife of the Japanese ambassador, planted the first two of these trees on the north bank of the Tidal Basin in West Potomac Park.–Wikipedia
(March 26, 2016, Mr. Beaver’s call for civility was ignored. At least one tree was broken by climbers and stripped of flowers for personal adornment.)

grey and green touristinfrastructure
Republicans were once interested in the Environment, witness Teddy Roosevelt and National Parks, Dick Nixon and the EPA. What happened?
In 1965 Democrat Lady Bird Johnson accepted a bunch more Yoshino trees from the Japanese Government. They were planted on the grounds of the Washington Monument.

Couple on the tidal pool.
Many many selfie sticks in action on the perimeter of the Tidal Basin..