The Trump administration’s separation of migrant children from their parents is “one of the darkest moments in our history,” former Vice President Joe Biden contended on Friday night, as reported by NBC News.

“Grotesque lies—lies about immigrants, about crime, about costs to the community. They’re simply lies—factually inaccurate,” said Biden. “And look folks, this administration’s policies that literally rip babies from the arms of their mothers and fathers — one of the darkest moments in our history.”

Speaking to more than 1000 attendees of the national convention for LULAC, the country’s largest Latino civil rights organization, Biden said the administration’s policy over the summer was part of its “all-out assault on human dignity.”

On Friday, the Trump administration said it had reunified 450 of more than 2,500 migrant children just one week away from a court-ordered deadline. Parents whom are given final deportation orders must decide between leaving their children in the U.S. or agreeing to reunification and, consequently, deporting their children as well.

Biden, who returned from trips to Denmark and Colombia in the last month, told the gathering of Latino activists that the country’s “reputation is being tarnished around the world.”