The Prophet's Flag is black.
The anarchist flag is black
Pirate flags are sometime black
but the" no quatrer " flag is red.
>All descriptions agree that a simple blood-red flag was flown from the San Fernando Church on February 23, 1836, to indicate Generalissimo Antonio Lopez de Santa Anna’s determination that no combatant in the Alamo would be shown quarter; some accounts also claim that as the flag was raised the Mexicans played the El Degüello as well,