A group of white supremacists barged into a racial justice training course in south Florida on Saturday, frightening organizers and attendees -- who believed they were about to get shot in a Dylann Roof-style assault.

On Saturday, social justice educator and activist Lutze Segu hosted a racial justice seminar in Wilton Manors, FL. After sending an operative to "case" the room, protesters from the white nationalist group "Identity Europa" barged into the seminar bearing a banner that said, "NO REGRET. We apologize for nothing."

The banner was an apparent protest of Segu's subject matter, which urges people of all races to come together to fight the doctrine of white supremacy.

"White supremacy harms all people, including white people," said the seminar's event page. "White supremacy robs us all of genuine human connections. White supremacy is destroying the earth and its inhabitants. White supremacy is polluting our water supply, our air, denying climate change, and suppressing the voices of the most marginalized."

Hate attacks are up sharply in the U.S. since the election of President Donald Trump. In the two years since Dylann Roof killed nine black parishioners in a Charleston, SC church, the SPLC said that attacks have exploded against people of color, Muslims, immigrants, LGBTQ people and Jews.

Raw Story reached out to Segu for comment, but has yet to hear back.

On Twitter, Segu (@FeministGriote) documented the fear she and attendees felt when the right-wing protesters burst into the room.