Someone drew a swastika on four dormitory doors at New York City’s New School over the weekend.

David Van Zandt, the school’s president, released a statement Saturday addressing the symbols, saying hate crimes were “unacceptable at the school.”

“Any form of expression that denigrates members of our community based on their race, ethnicity, religion, sexual or gender identity, or political beliefs is completely abhorrent and antithetical to our core values,” he said in a statement.

Mayor Bill de Blasio also weighed in on the incident, tweeting that hate speech “had no place in NYC.”

Hate speech is reprehensible, and has no place in NYC. To the affected, we stand with you. To the perpetrators, we are better than this. https://t.co/8J4JU56yti — Bill de Blasio (@NYCMayor) November 12, 2016

It’s unacceptable that this is the second investigation we’ve had to announce in the last several hours. https://t.co/U18t3b4TV4 — Andrew Cuomo (@NYGovCuomo) November 13, 2016

There has been a spike in hate-related incidents targeting minorities across the country following Donald Trump’s victory in the presidential election.

Trump ran a divisive campaign in which he called Mexican immigrants rapists and criminals and promised to block Muslims from entering the United States. He also repeatedly employed anti-Semitic imagery and has earned the backing of white supremacists.