A "poignant message" refers to a powerful and emotionally moving message that makes you feel a strong sense of sadness or enlightenment. Full definition
It's a book you hate to see end and there is a very poignant message to be learned here. (bookbrowse.com)
For that reason, many adults go to the movies to enjoy the latest animated film without children, not because they want to delight in «kid's stuff,» but because the genre offers poignant messages in a beautiful format that only these types of movies can really deliver. (relevantmagazine.com)
He's known for posting poignant messages on Facebook about trophy hunting, the atrocities of the fur industry, and the absurdity of keeping animals in captivity. (onegreenplanet.org)