The First Amendment is alive and well at an Oregon high school — no matter how much some people may dislike that fact.

This week a judge sided with a student named Addison Barnes who had worn a pro-Trump T-shirt to his school but been kicked out for it. The teenager sued — and the judge issued a temporary restraining order against the high school. It cannot prevent the student from wearing his pro-Trump shirt for the remainder of the school year.

U.S. District Judge Michael W. Mosman ruled against the school’s censorship, deciding there was “thin” evidence the shirt would “substantially disrupt” the school environment, as it had claimed.

“There’s not enough to go on here to show that sort of legitimate concern justifying censorship of this core political speech,” Mosman decided.

“The T-shirt is core protected speech, and walking down the streets of Hillsboro, no state official — petty or grand — would be able to do much about that T-shirt legitimately under the Constitution,” the judge added.

The back story is as disturbing as it is compelling: Oregon high school senior Addison Barnes had been suspended from Hillsboro’s Liberty High School in January for wearing a so-called offensive T-shirt. “Donald J. Trump Border Wall Construction Co.,” his shirt said, along with: “The wall just got 10 feet taller.”

But Assistant Principal Amanda Ryan Fear was afraid the shirt’s message might cause a ruckus among the school population — so she had Barnes cover it up. This, despite the fact that Barnes’ own teacher’s room had a sign posted that said, “Sanctuary City, Welcome Home.”

After a short while, though, Barnes changed his mind — and decided to reveal his T-shirt again. Ryan Fear then sent a school resource officer to remove the teen from school grounds, and he was told he could receive as many as 10 days of suspension for “defiance,” as The Oregonian reported.

Rather than be physically taken off the grounds, however, Barnes left the premises voluntarily. He absence was treated as a suspension — and he then sued the school. In his lawsuit, he made the case the school was selectively restricting his political speech.

“It seems particularly unfair to me that my speech is censored, when the school is open to competing political views,” Barnes’ legal statement to the court read.

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His lawyers argued Barnes’ free speech rights extended to the public classroom in this case.

“The First Amendment protects students’ right to speak on political or societal issues — including the right to express what school officials may consider unpopular or controversial opinions, or viewpoints that might make other students uncomfortable,” his lawyers wrote.

Liberty High School had contended Barnes was creating a “hostile learning environment,” since the school’s student population is roughly a third Hispanic.

“Through his shirt, Barnes sought to comment on a national debate about a serious political and societal issue,” the lawsuit added.

Liberty High School had contended Barnes was creating a “hostile learning environment,” since the school’s student population is roughly a third Hispanic. (Administrators were apparently implying that Hispanic students would be offended by a T-shirt message that took a stand against illegal immigration.)

The last day of school for Liberty High School seniors is this Wednesday, June 6, so it’s entirely possible Barnes will be wearing his T-shirt of choice next week — before school is out for the summer.

Kyle Becker is a content writer and producer with LifeZette. Follow him on Twitter