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Department of Homeland Security Secretary Kirstjen Nielsen said her department has offered its full support to New Zealand in the wake of the terror attacks.

"We, too, have seen the face of such evil with attacks in places such as Charlottesville, Pittsburgh, and Charleston. And in the wake of the New Zealand tragedy, I want to make one thing very clear: We will not permit such hate in the homeland,” she said.

Nielsen called the mosque shootings a "horrible assault" against Muslim worshipers