"Was so happy to meet this guy at the #BLM march today," the post read.
"Love listening to @lisi4300. I used to live in Goodna with my dad and brother who used to go to Kruger Park."
But while many of Quaden's 107,000 followers were delighted the schoolboy had met one of his idols, others flooded the picture with horrific racist remarks.
Spotting the cruel remarks, some of Quaden's fans leapt to his defence, branding the act "sick".
"Please leave the comments off. I am so sick of seeing grown ass adults bully a CHILD with special needs! It just hurts my heart," one said.
"Why are yous (sic) bullying this lil boy," another questioned.
Another lost their cool, telling the "keyboard warriors" to "f**k off with the hate".
"So many trolls hating, they got no life but to make stupid comments," another agreed, adding a facepalm emoji.
Others praised the little boy's efforts to support the movement which has grown out of protests in America.
Outrage over the death of George Floyd, a black man from Minnesota, has sparked the Black Lives Matter protests across the United States and countries around the world, including Australia. Four police officers have now been charged over Floyd's death.
One person wrote on Quaden's post: "Nice to see you out there for the cause man."
"I wanna stand in you," another said.
In another photo, Quaden held a poster displaying the face of Indigenous teen TJ Hickey, who died aged 17 while fleeing from police on a bicycle on February 14, 2004.
TJ was thrown off his bike and impaled on a fence, sparking riots in the inner Sydney suburb of Redfern.
Quaden has kept a low profile after becoming a household name earlier this year, with many of his Instagram posts being dedicated to raising awareness about Indigenous issues.
