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United States Vice President JD Vance on Saturday slammed those who criticise America’s “imperfections” in a lengthy July Fourth address from the deck of an amphibious assault ship in New York.

Vance’s speech came as dozens of tall ships from more than 20 countries sailed into New York Harbour to celebrate the 250th anniversary of the signing of the Declaration of Independence on July 4, 1776.

“You will hear a couple small but loud voices today speak obsessively not of our national greatness, but of our national imperfections,” Vance said from the USS Kearsarge.

“They’ll talk about America’s sins with the anger and zeal of a brimstone preacher, but without any of the grace or forgiveness that must be present in the Christian faith,” Vance continued, adding that these critics “misunderstand the essence of America”.