Left-wing terror attacks reach record highs in 2025 — fueled by unhinged opposition to Trump admin, disturbing study finds

Left-wing terror attacks are on track to reach record highs this year — as Democrats have been accused of ramping up their harmful rhetoric in their opposition to the Trump administration, a disturbing new study has found.

Violent plots planned or perpetrated by the far left in the US, as a percentage of all terrorist attacks and plots, hit a record high in the first half of 2025, and are on pace to reach a three-decade high, according to a study from the Center for Strategic & International Studies.

Through July 4, 2025 — thus excluding the assassination of Charlie Kirk and the attack on the Dallas ICE facility — there were five left-wing attacks or plots, the study found.

Mugshot of Tyler Robinson, suspect in the fatal shooting of Charlie Kirk.
Mugshot of Tyler Robinson FBI

This is more than eight times higher than the average of 0.6 left-wing incidents annually from 1995 to 2000.

CSIS researchers compiled and analyzed a dataset of 750 terrorist attacks and plots in the United States between January 1, 1994, and July 4, 2025.

For the first time in 30 years, terrorist attacks from the far-left are outpacing attacks from the extreme right, the analysis also shows.

Charlie Kirk throwing hats to the crowd at a Utah Valley University speaking event.
Charlie Kirk at a Utah Valley University event before he was shot to death. via REUTERS

The CSIS study found that the increase in left-wing violence since President Trump first took office in 2016 has been largely motivated by anti-government extremism or partisan extremism.

Since then, “all left-wing attacks through July 4, 2025, appeared to be motivated by one of these ideologies,” the study found, noting that Charlie Kirk’s assassination appears to fit the pattern.

Kirk’s alleged killer, 22-year-old Tyler Robinson, scrawled “hey fascist, catch this” on a shell casing before shooting him dead on Sept. 10, law enforcement officials said.

Luigi Mangione, accused of murder, is escorted by police into court.
Luigi Mangione, accused of the murder of United Healthcare CEO Brian Thompson, is escorted by police as he arrives at court in New York City on Sept. 16, 2025. AFP via Getty Images

The CSIS study found the rise in left-wing violence this year can be explained “as opposition to the Trump administration fuels attacks against both its political leadership and the state institutions that carry out its agenda.”

The study notes immigration has also emerged as a major issue this year, highlighted by this week’s attack at an ICE detention center in Dallas — which President Trump blamed on the rhetoric from “radical left Democrats.”

Donald Trump, with blood on his face, is surrounded by U.S. Secret Service agents, one with an arm around him, and another with a clenched fist raised in the air, with an American flag visible in the background against a blue sky.
Donald Trump surrounded by Secret Service agents after an assassination attempt at a campaign rally on July 13, 2024, in Butler, Pa. AP

While political “leaders are not responsible for extremists in their midst,” the authors wrote, “they are responsible for how they behave towards extremism.” They called for both sides to condemn violence from their side and call for calm when it involves the other.

“The celebrations among some on the left of Luigi Mangione is a failure to undermine support for left-wing violence,” the study said.

Democrats have come under fire for calling those in this Republican administration “Nazis” or “fascists” — particularly in regard to its massive deportation effort.

A newspaper cover with the headline "LEFT HATE LEADS TO MURDER" next to a bullet inscribed with "ANTI-ICE" and a photo of the shooter.
The New York Post’s front cover on Thursday, September 25, 2025.

In July, the White House urged Dems to “tone down” their critiques of US Immigration and Customs Enforcement [ICE], but many have continued.

Just this week, California Gov. Gavin Newsom appeared on “The Late Show with Stephen Colbert” and slammed ICE as a “private domestic army” being used to bolster the Trump admin’s “authoritarian tendencies.” 

Minnesota Governor and former Democratic vice presidential candidate Tim Walz has referred to the agency as a “modern-day Gestapo.”

Ryan Wesley Routh in handcuffs between two sheriff's deputies.
Ryan Routh was found guilty of attempting to assassinate President Trump.MARTIN COUNTY SHERIFF’S OFFICE/AFP via Getty Images

Far-left “Squad” Rep. Rashida Tlaib (D-Mich.) earlier this month described President Trump’s Washington, DC, crime crackdown as a “fascist takeover.”

And even before losing the 2024 election, former Vice President Kamala Harris agreed that Trump was a “fascist” when she was asked on the campaign trail.

Meanwhile, the study’s authors said, one possible explanation for the decline in right-wing terrorism this year is that “some extremists do not feel the need to act violently if their concerns are being addressed” since Trump took office.