Dozens of New Jersey high school students walked out of classes to protest a video showing a teacher telling children to “speak American.”

“Men and women are fighting. They are not fighting for your right to speak Spanish,” the educator can be heard telling students at Cliffside Park high School in the footage shared on social media. “They are fighting for your right to speak American.”

On Monday morning, about 100 students in the heavily-Hispanic district walked out — with one pulling a fire alarm and others waving flags celebrating their heritage and cheering as they gathered outside, NJ.com reported.

“Coming from an English teacher — saying to speak American — that was just stupid,” said Anthony Campos, 16, who saw the video on Snapchat minutes after it was posted.

“It was wrong and it hurt me a lot,” said another student, Wagner Vasquez, whose family is originally from the Dominican Republic. “A lot of people here are hurt.”

Yennifer Pinales, 17, was in class when the incident happened and told her teacher she was appalled by the inflammatory comments, only to be kicked out of the room.

“The teacher should apologize,” Pinales told ABC7. “If she doesn’t feel comfortable working with people speaking a second language, then she should go someplace else.”

The school said it encourages students who struggle with English to practice, but Pinales said she speaks Spanish because she wants to and is also learning French.

School district officials refused to comment, the outlet reported.

“Seeing as though the board has not given its decision on the situation at hand, I feel as though the protest is not necessarily something I would recommend,” student council president Kleidon Ndreu said. “I think we all need to take deep breaths.”