'Galling': Mary Trump blasts 'coward' uncle over Arlington National Cemetery appearance

Donald Trump's outspoken niece lashed out at her uncle on Tuesday night, calling his appearance at Arlington National Cemetery on Monday "galling."

In her newsletter, "The Good In Us," Mary Trump noted that her father was the exception — not the rule — in the Trump family when it came to military service. While he served in the Air Force National Guard, Donald Trump received four deferments based on what she called a "false diagnosis of bone spurs engineered by his father."

Ms. Trump blasted her uncle as an "unpatriotic coward" — noting that he also reportedly "trashed veterans and fallen soldiers — and questioned why he was allowed to participate in a wreath-laying ceremony at the cemetery.

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"His appearance there was a desecration doing the only thing he knows how to do with members of the military and their families—use them as props; the ridiculous grin and thumbs up made it worse—as if he were attending a photo-op at a local diner," she wrote.

The cemetery is filled with fallen soldiers who gave their lives to protect and defend the Constitution, she said — "a document Donald has never read, has attempted at every turn to shred, and will, if given the chance, set on fire."

She continued her attack, saying Donald Trump is a "weak and insecure man" who "mocks his betters to compensate for his own inadequacies."