The poems are supplied by Portsmouth's poet laureate, the 12th to serve in the role and one of several in the state of Maine. Here's one she wrote after she learned of the passing of a fellow poet:
Today I find the mask useful
along with sunglasses
to hide my tear streaked face,
not wanting to scare the barista
who has enough to deal with
behind his own mask.
In general, writers weigh in later, sometimes years after a historical event. Poetry is different, I think, and in this case it's helpful that poets are commenting in real time.