Every time someone lies, it's an opportunity to scam them. Indeed it might be your duty. They either have to uphold your scam to uphold their lie, or admit they're lying.
"There is nothing racist about my NFTs other than haters like you trying to tear me down.
We are creating a way for people to remember George Floyd in the Metaverse.
Whether you like it or not, the Metaverse is the future. We want George Floyd to not be left behind in the past."
Copying a liar's register isn't even hard. Lying gives you an effective IQ hit; you don't even have to be smarter than the liar to scam them.
When you realize someone's bullshitting you, take them seriously in such a way that they have to pay, ideally with hard cash. Every time they double down, remember to double down on the tribute you demand.