A fellow Democrat posted a snapshot of Sen. Bernie Sanders (I-VT) apparently nodding off during a Memorial Day ceremony in the Presidio military cemetery in San Francisco on Monday.

Zoe Dunning, a gay rights activist, veteran, Hillary Clinton supporter, and high-ranking member of the San Francisco Democratic Party, posted the photograph to Facebook, with the following message:

Attending the Memorial Day Ceremony honoring the over 1 million Americans who have lost their lives serving our country, and watching Bernie Sanders fall asleep during it. There is nothing I can really add here. #imwithher

Responses on Facebook were less than enthusiastic. One man, Richard Stone, posted:

Zoe, thanx for your service. But I’m VFW and elected green (county council) and I still honor Bernie’s dedication to veterans rights. This is sheer artifice and a desperate attempt to disparage someone who has a stellar record of vets rights, nothing more to add here, #SMDFH

Another, Patrick Connors, was sarcastic, and scathing:

Aren’t old people the worst?? He clearly hates all veterans. Nothing political about that on Memorial Day, eh? That’s the San Francisco Democratic Party for you….never failing to miss an opportunity to act like a Republican!

Sanders has an excuse other than age: he has kept a punishing campaign schedule, criss-crossing the Golden State and holding several rallies and meetings per day in an effort to turn out his vote and upset Clinton on June 7.

Clinton has been more sparing in her schedule, partly because she has deployed her husband, former president Bill Clinton, to reach some of the more far-flung rural communities.

Sanders serves on the Veterans Affairs committee in the U.S. Senate.

Adelle Nazarian contributed to this article.

Joel B. Pollak is Senior Editor-at-Large at Breitbart News. His new e-book, Leadership Secrets of the Kings and Prophets: What the Bible’s Struggles Teach Us About Today, is on sale through Amazon Kindle Direct. Follow him on Twitter at @joelpollak.