Twitter gossip, not earth-shaking but pretty revealing: as Glenn Greenwald was lashing out tonight at everyone who expressed even the mildest criticism, he reacted to a tweet from Daniel Serwer of peacefare.net in his customary way.

@DanielSerwer @wikileaks Edward Snowden has done far more for the world in the last 2 months than you have in your life. Does that help?

— Glenn Greenwald (@ggreenwald) July 6, 2013

The target of Greenwald’s wrath is Daniel Serwer, father of Adam Serwer who writes for Mother Jones, Salon, and many other publications, and now works for MSNBC — a lot of the same places that often feature Greenwald’s work.

Adam took exception.

@ggreenwald @DanielSerwer @wikileaks hey Glenn, fuck you, that’s my dad, and you don’t know a thing about him.

— AdamSerwer (@AdamSerwer) July 6, 2013

For the record, here’s the bio of the man Greenwald said had accomplished nothing compared to Edward Snowden: Center for Transatlantic Relations | Faculty, Staff and Fellows.

Daniel Serwer (Ph.D., Princeton) is a Professor of Conflict Management, as well as a Senior Fellow at the Center for Transatlantic Relations, at the Johns Hopkins School of Advanced International Studies. He is also a Scholar at the Middle East Institute.

Formerly Vice President for Centers of Peacebuilding Innovation at the United States Institute of Peace (2009-10), he led teams there working on rule of law, religion, economics, media, technology, security sector governance and gender. He was previously Vice President for Peace and Stability Operations at USIP, where he led its peacebuilding work in Iraq, Afghanistan, Sudan and the Balkans and served as Executive Director of the Hamilton/Baker Iraq Study Group. Serwer has worked on preventing interethnic and sectarian conflict in Iraq and has facilitated dialogue between Serbs and Albanians in the Balkans.

He was a minister-counselor at the Department of State, serving from 1994 to 1996 as U.S. special envoy and coordinator for the Bosnian Federation, mediating between Croats and Muslims and negotiating the first agreement reached at the Dayton peace talks. From 1990 to 1993, he was deputy chief of mission and chargé d’affaires at the U.S. Embassy in Rome, where he led a major diplomatic mission through the end of the Cold War and the first Gulf War.

Immediately following Adam Serwer’s tweet, Greenwald suddenly stopped posting to Twitter. The sound of crickets was heard, broken only by this tweet from Daniel Serwer:

@ggreenwald @wikileaks I hope your due diligence on Snowden was more careful than your research for that tweet.

— peacefare.net (@DanielSerwer) July 6, 2013

This exchange did lead to a pretty funny trending hashtag, though, so it wasn’t a complete bummer. Here’s my contribution:

If Edward Snowden didn’t exist, the universe would have to spontaneously generate him #GreenwaldSnowdenBrags

— Charles Johnson (@Green_Footballs) July 6, 2013