Don't comment on it and just post the art -> some people enjoy the art, a whole lot of people skip past it, while the only people who understand the significance of the image are those who know the reality of the wealthy making bank with dispensaries while the prison industrial complex harshly punishes Black people at much higher rates than their white counterparts for non-violent drug offenses.

Comment on the fact there there is something going on in the image -> fewer people are skipping past the image because they want to know what the secret is, and when they can't discover it, their curiosity takes them into the comments to find out. In doing so, they learn something they didn't know about the state of affairs, and a non-zero percentage of them will begin to speak up and advocate for those incarcerated under an unjust legal system.

It isn't about the art; it's about boosting the signal.