88 is a white supremacist numerical code for “Heil Hitler.” H is the eighth letter of the alphabet, so 88 = HH = Heil Hitler. One of the most common white supremacist symbols, 88 is used throughout the entire white supremacist movement, not just neo-Nazis.
Additional context:
88 is a white supremacist numerical code for “Heil Hitler.” H is the eighth letter of the alphabet, so 88 = HH = Heil Hitler. One of the most common white supremacist symbols, 88 is used throughout the entire white supremacist movement, not just neo-Nazis.
source: https://www.adl.org/resources/hate-symbol/88