National Journal‘s serial tweeting Ron Fournier has a quite a folksy manner on Twitter. So much so that when people insult or criticize him, half the time he either apologizes or agrees with them. It’s so cringeworthy to watch.

But praise the lord, Fournier appears to have a breaking point.

Late last night, Eric Dondero, publisher of Libertarian Republican and a former aide to former Rep. Ron Paul (R-Texas), dared to remark on a photograph published in National Journal. The picture (above) accompanied a story on the idea that Democratic candidates could get a boost by strong job reports by Alex Roarty. The writer’s conclusion: It won’t help. Fournier didn’t like Dondero’s commentary.

The result: BLOCKED. Whoa! Seriously Fournier?

His reasoning: Fournier felt the publisher remark was “un-American.”

Have a look at the exchange below.