The Facebook page of "Aboriginal memes" -- now removed from the site -- said it was engaging in "controversial humour". I didn't find any humour. I have written and performed comedy in a previous life, and my sense of humour hasn't deserted me.
This was just offensive racial vilification that made me feel sick. And it's making indigenous people sick, too.
There is a clear effect of the experience of racism on health. Here's some examples quoted by Dr Angela Durey, who has researched the health effects of racism: