A Department of Homeland Security employee who runs a website that calls President Obama a "treasonous mulatto scum dweller” has been put on paid administrative leave.

On his site, War on the Horizon, Ayo Kimathi, who is Black, predicts and advocates a race war and calls for the murder of whites.

“Warfare is eminent, and in order for Black people to survive the 21st century, we are going to have to kill a lot of whites — more than our christian hearts can possibly count,” he writes on his site.

The news of Kimathi’s site was first reported by the Southern Poverty Law Center, which monitors hate groups.

A former supervisor told the SPLC that Kimathi’s co-workers are afraid of him.

“This guy is filled with hate,” the supervisor said. “People are afraid he will come in with a gun someday and go postal. I am astounded he’s employed by the federal government, let alone Homeland Security.”

Writes SPLC:

Kimathi works for U.S. Immigration and Customs Enforcement, a division of Homeland Security. Because it is a law enforcement agency, the supervisor said, employees are required to obtain official permission in writing for any outside activities, such as working a second job at McDonald's, running the bingo game at church, or volunteering at the Red Cross.

Kimathi obtained official permission but only by misrepresenting the true nature of his endeavor. He told management that it was an entertainment website selling videos of concerts and lectures. He called it simply WOH, never saying that WOH stood for War on the Horizon.

In a brief statement prior to his suspension, ICE spokeswoman Gillian Christensen said "ICE does not condone any type of hateful rhetoric or advocacy of violence of any kind against anyone. Every ICE employee is held to the highest standard of professional and ethical conduct. Accusations of misconduct are investigated thoroughly and if substantiated, appropriate action is taken.”

Deborah Skinner contributed to this article.

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(Photo: Waronthehorizon.com)