42 57 71 74 100 | Google pays tribute to the Negro Silent Protest Parade of July 28, 1917 +100-year anniversary

https://en.wikipedia.org/wiki/Silent_Parade

74.

Black Panther Party = 74

White Supremacist = 74

7, the 4th prime (7th month, July)

The date of the march was one with 71 numerology, a number we see coded around 'African American' history often.

7/28/1917 = 7+28+19+17 = 71

This is the year 100-year anniversary.  Hundred = 74

African American = 71 / 100

Notice they marched along 5th Avenue.

Five = 42

They started at 57th.

Scottish Rite = 57