“O Captain! My Captain!” By Walt Whitman (1865)
Bonus:
Summary: Abe Lincoln died.
Commentary: This was in the original 15MAD set two years ago, but I think it was sandwiched with a few others. For today, just the famous poem by itself.
Syllable count is all over the place, but there is a fixed rhyme scheme: AABBCDEC
I think the thing that stands out about this poem the most is the historical context. It's cool to have this first hand artistic account of a famous historical event. I don't want to say there aren't any about more modern events like 9/11, the fall of the Berlin Wall, etc., but this is certainly the most famous. I'd argue they're valuable as a window into how people felt at/about the time.
Second, the face that there was a famous poet who cared enough about the president to write a popular poem about his death. No one would bother for Biden. Trump might get some, but they'll probably fade. Maybe Obama could've gotten one. Probably not Bush.
4/5, I hate slant rhymes.