TACOMA, Wash. – Tacoma police are investigating anti-Trump graffiti and other messages scrawled in spray paint at an area elementary school over the weekend.

The vandalism at Stanley Elementary School included messages like “f*** Trump,” a swastika with a circle and slash through it, as well as a cross, also with a circle and slash, KIRO reports.

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From The News Tribune:

The message of the graffiti didn’t stick with one particular theme: Found on the building were a swastika with a strike-through over it, a cross with a strike-through over it (a possible reference to the punk band Bad Religion, which played at a craft beer and music festival in Tacoma on Saturday), and the words “F— Trump.”

“Pennywise” was also written on the building, though it’s not clear if that was a reference to the punk band by the same name or the creepy, homicidal clown from the recently-released reboot of the movie IT.

Tacoma schools spokesman Dan Voelpel told the News Tribune a maintenance crew cleaned off the paint. It marked the first time the school had been targeted with hateful graffiti, he said.

Since Donald Trump’s historic election win over Hillary Clinton in last year’s presidential election, there have been numerous schools across the country attacked with Trump-related and racist graffiti. In some cases, Trump haters have targeted buildings with racist messages in an attempt to smear the president’s supporters.

In Texas, a teacher’s aide in the Spring Branch Independent School District was charged with a felony for spray-painting anti-Trump messages on a brand new school still under construction. A witness in that incident, which occurred last November, recorded the car and license plate of Jaya Jacobs as the vehicle was leaving the construction site of the new Alief Career Center, KHOU reports.

Jacobs was charged with felony criminal mischief because the damage exceeded $5,000.

In February, a student at Beloit College spray-painted his own dorm door and nearby wall with anti-Muslim graffiti in an attempt to draw attention to himself, Beloit Police posted to Facebook.

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It was a similar situation in May, when a racist typewritten note sparked a campus wide protest at St. Olaf College. The racist note turned out to be “fabricated” as part of a “strategy to draw attention to concerns about campus climate” and “was not a genuine threat,” according to the Minneapolis Star Tribune.

The racist graffiti, anti-Trump messages, hate hoaxes and other types of vandalism incidents at schools in recent years have made it much more difficult for police to track down the perpetrators.

The cases also mirror similar problems with a rash of alleged attacks on Muslims following Donald Trump’s election win, several of which later turned out to be hate hoaxes designed to motivate hate against the president, EAGnews reports.