We all know the history. One early summer day in 1980, at Boulder, Colorado, the Sixteenth Gyalwa Karmapa called a talented young seamstress named Deborah Luscomb into his sitting room at Marpa House and showed her three colored pencil sketches for what became the "Karmapa's Dream Flag," or Namkhyen Gyaldar. He dreamed that wherever this flag is flown, the Dharma will flourish.
I firmly believe this is so.
I believe every Buddhist in the world should fly this flag.
Here is a photograph of the so-called billow clouds that are formed by Kelvin-Helmholtz instability, when horizontal layers of air brush each other at different velocities. Click here for enlightened discussion of the matter.
UPDATED: The ever-precise Tashi Mannox has posted a useful article on the correct execution of the Karmapa's design: here.