Street memorial to an unknown person | 4300 block Nannie Helen Burroughs Ave NE DC

I observed and documented this small street shrine, erected to an unknown person. It is in the 4300 block of Nannie Helen Burroughs Ave NE, Washington, DC

I could find nothing in news reports or police sites. A twitter post from May 5, 2020 stated:

"CRITICAL SHOOTING/ PROBABLE HOMICIDE--- 4300 blk Nannie Helen Burroughs Ave NE-DC in the Upper Central NE area. 30yr-old man shot in head; last reported in cardiac arrest. Police working on suspect info now. "

 I could find no further information about its origin.