CHARLOTTE, N.C. - A 23-year-old Ukrainian refugee named Iryna Zarutska was stabbed to death on a Charlotte, N.C., light rail train last month, an unprovoked attack that President Donald Trump appears to be using to further exemplify the "need" for federal troops to be deployed in other large cities, like in D.C.

Trump denounced the killer, calling him a "madman" and a "lunatic" during a speech on Monday.

"It’s right on the tape, not really watchable because it’s so horrible," the president said of the surveillance footage. "She’s just sitting there."

"When you have horrible killings, you have to take horrible actions," he added.

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Zarutska fled Ukraine three years ago with her mother and two siblings to escape the war with Russia, according to her obituary . She attend

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