After Khizr Khan, father of Army Capt. Humayan Khan who was killed in Iraq in 2004, criticized Donald Trump at the Democratic National Convention, Trump fired back.
He said Khan had "no right" to criticize him and implied Khizr's wife, Ghazala, was "not allowed" to speak. (Her Washington Post column might prove him wrong.)
Here's Khizr's speech that started it all.
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