The athlete announced on social media that her mother passed shortly after getting to see Saunders win the silver medal in shot put.
Johnson's friendship with the civil rights icon coincided with his own political awakening, which included work for the NAACP and the HRC.
Velasquez died alongside her parents, Julio and Angela Velasquez.
The cohost of the popular She Rates Dogs podcast was 26.
Gearhart was the first out lesbian to have a tenure-track position at San Francisco State University and a campaigner against California's antigay Briggs Initiative.
Banes died of injuries suffered when a scooter hit her June 4.
Sanker's circuit parties were legendary for their hedonism and often discounted for their philanthropy.