Micro-aggressions?

My grade 9 Science teacher, Mr. Steed, who sported black and thatched eyebrows that, like wiry awnings, reached out past the bridge of his nose, looked at my petri dish, blinked once, a rarity since his eyebrows usually handled any micro-intrusions, and exclaimed,

"Wakeham, you dolt! You didn't seal your dish properly and so the mould, those are the little green buggers, have aggressively infested your precious agar."

So, to extend a metaphor, hopefully not past the piteous stage.

Precious agar is of course the debate.

The experiment is to inoculate said medium with wit and reason and illumination...you know, grow something useful.

Micro-agressions?

They are used by those usually sealed out of the debate.

They use the 'green buggers of micro-aggression' to infest the precious agar, rendering the results of the experiment better suited to those who once sat at the back of an elementary school classroom, passing notes about who next to bully.