Could be the bottom of the Kenyan flag in green!
From wiki also:
2010s usage[edit]
In the United States, following the refusal of a grand jury to indict a police officer in the August 9, 2014 shooting of Michael Brown in Ferguson, Missouri, a Howard University student replaced the U.S. flag on that school's Washington, DC campus flagpole with a Pan-African flag flying at half-mast.[8][9] The incident resulted in the university president, Wayne Frederick, issuing a statement disapproving the flag-raising by unauthorized personnel.[10][11]
Alternative names[edit]
The flag goes by several other names with varying degrees of popularity:
the UNIA flag, after its originators;
the Marcus Garvey flag;
the Universal African flag;
the International African flag;
the Black Liberation flag;
the Pan-African flag;
the Black Nationalist, African Nationalist, or the New Afrikan Liberation flag.
the Bendera Ya Taifa (Kiswahili for "flag of the Nation"), in reference to its usage during Kwanzaa.