GRAND RAPIDS, Mich. – Four Grand Rapids Christian High School students were suspended for two days this week for holding up pro-Trump signs near a banner on campus supporting illegal immigration.

The students gathered in front of a banner hanging at the school last Friday that read “Immigrants are a Blessing Not a Burden” and posed with messages that included “Trump” and “Build the Wall,” WZZM reports.

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Social justice students with the group “Love Thy Neighbor” created the banner to highlight the positive impacts of immigrants, and the pro-Trump display allegedly sparked a verbal confrontation.

A parent of one of the pro-Trump students told the news site they “were simply trying to support the president of the United States” and questioned why school officials allow some students to promote their perspective on the divisive topic of immigration, but not others.

“Why are they bringing this political nonsense into the school?” the unidentified parent asked.

According to Fox 17:

(The Trump-supporting students) say that the school immediately took their signs away and notified them of their suspension on Friday without much explanation. But they also say that they are most puzzled by the reaction from other students. The four say that upwards of 50 other students came at the four of them, threatening them with violence.

Grand Rapids Christian superintendent Thomas DeJonge sent a notice to parents this week that alleges the pro-Trump students were not suspended because of their political beliefs. They were banned from school for two days for being “disrespectful,” he wrote.

“To be clear, the students were not disciplined because of having expressed their political viewpoint,” DeJonge wrote. “Rather, they were disciplined because of the disruption they caused and disrespect they demonstrated toward other students.”

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DeJonge alleged the four students “became verbally aggressive and made insensitive comments toward other students,” but did not discuss what, if any, insensitive comments came from the students supporting illegal immigration.

The students served their suspensions on Monday and Tuesday, and were back to school on Wednesday. Parents of all four students objected to the punishment, WZZM reports.

“Those same students have apologized for their behavior and met with fellow students to reestablish the respectful culture that exists on our campus,” DeJonge wrote in a statement to the media. “Additionally, students have asked to establish a more formal, ongoing dialogue to help everyone in our school community understand and embrace diverse viewpoints.”

The suspensions at Grand Rapids Christian comes just a few months after officials at the nearby Forest Hills Public Schools apologized to the community on behalf of students who displayed a Trump “Make America Great Again” banner and Betsy Ross 13-star American flag during a “red, white and blue” theme night in September, Mlive.com reports.

Those students were labeled as racists online for “brandishing … symbols of nationalism and white supremacy,” EAGnews reports.