Politico Magazine’s national editor resigned Tuesday after he published the home addresses of Richard B. Spencer, head of the white nationalist think tank National Policy Institute.

Michael Hirsh wrote a Facebook post on Tuesday that read, “Stop whining about Richard B. Spencer, Nazi, and exercise your rights as decent Americans. Here are his two addresses.: …,” according to screenshots obtained by The Daily Caller.

He made clear in a subsequent comment that his intentions were not to send Mr. Spencer a strongly worded letter.

“He lives part of the time next door to me in Arlington. Our grandfathers brought baseball bats to Bund meetings. Want to join me?” Mr. Hirsh told one commenter.

Politico editor-in-chief John Harris and editor Carrie Budoff Brown called Mr. Hirsh’s post indefensible.

“These posts were clearly outside the bounds of acceptable discourse, and POLITICO editors regard them as a serious lapse of newsroom standards,” they said in a statement, CNN reported. “They crossed a line in ways that the publication will not defend, and editors are taking steps to ensure that such a lapse does not occur again.”

Mr. Hirsh resigned just hours after making the posts, CNN reported.

Mr. Spencer, a leader of the so-called “alt-right” movement, organized a Washington, D.C., conference over the weekend, which made headlines after former reality TV star and outspoken Nazi sympathizer Tila Tequila tweeted a photo of herself and two men giving a “Heil Hitler” salute at the organization’s pre-conference banquet.

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