For 20 years, ISD has delivered field-leading threat detection, analysis and real-world strategies to combat terrorism, extremism and authoritarianism - in all their ideological forms.

Far-Left Extremism

Polarisation and politicisation around discussions of the far-left has have created a gap in objective analysis rooted in real-world harms. ISD monitors and analyses trends in far-left mobilisation, with a focus on violent groups and actors who promote antisemitism, media manipulation or authoritarian state propaganda.

January 23, 2025

Conflict Amplified: Disinformation and Hate in the Israel-Hamas War

This report explores the spread of hate speech, disinformation and extremism during the 2024 Israel-Hamas conflict in the UK, France and Germany.

Far-Left Extremism, Far-Right Extremism, Information Warfare and Online Manipulation, Terrorism and Extremism

January 8, 2025

Left-Wing Extremism

Far-Left Extremism

August 20, 2024

Beyond the collective: Understanding Terrorgram’s efforts to infiltrate the mainstream on Telegram

Far-Left Extremism, Tech Accountability and Safety, Terrorism and Extremism

April 5, 2024

US ‘Antifa’ Groups

Far-Left Extremism, Targeted Threats, Hate and Abuse, Threat Analysis and Prevention

January 16, 2024

ISD’s Julia Ebner on reports of members of German far-right party participating in ‘secret’ planning of ‘mass deportation’

Anti-Migrant, Far-Left Extremism, Terrorism and Extremism

November 23, 2023

Condemn, condone, converge: German extremist and conspiracist responses to the Israel-Gaza crisis

Antisemitism, Far-Left Extremism, Far-Right Extremism, Hybrid Extremism and Nihilistic Violence, Islamist Extremism, Targeted Threats, Hate and Abuse, Terrorism and Extremism

November 23, 2023

Anschuldigen, anprangern, anstacheln: deutsche extremistische Reaktionen auf den Israel-Hamas Konflikt

Antisemitism, Far-Left Extremism, Far-Right Extremism, Hybrid Extremism and Nihilistic Violence, Islamist Extremism, Targeted Threats, Hate and Abuse, Terrorism and Extremism

October 16, 2023

Far left, far right antisemitism likely to rise amid Israel-Hamas conflict

Antisemitism, Democratic Integrity, Far-Left Extremism, Far-Right Extremism, Targeted Threats, Hate and Abuse, Terrorism and Extremism

August 29, 2023

Young guns: Understanding a new generation of extremist radicalization in the US

Far-Left Extremism, Far-Right Extremism, Hybrid Extremism and Nihilistic Violence, Islamist Extremism, Terrorism and Extremism

Further Reading

May 20, 2021

A snapshot of far-right activity on Gab in Australia

New research analyses the interplay between far-right and far-left groups in the state of Victoria, Australia, on the alt-tech social platform Gab.

Far-Left Extremism, Far-Right Extremism, Gaming and Alternative Platforms

December 15, 2020

Australia’s far-left: A security threat?

Mario Peucker and ISD's Jacob Davey write for ABC (Australia) on whether Australia’s radical left pose a national security threat.

Far-Left Extremism, Far-Right Extremism

November 25, 2020

The Interplay Between Australia’s Political Fringes on the Right and Left: Online Messaging on Facebook

This briefing outlines findings from an analysis of the far-right and far-left Facebook ecosystem in Australia in the first seven months of 2020.

Far-Left Extremism, Far-Right Extremism, Tech Accountability and Safety

November 5, 2020

The shifting conversation around Antifa

ISD conducted a long-term analysis of conversations around the loose network of far-left organisations known as Antifa between January 2019-June 2020.

Far-Left Extremism, Far-Right Extremism, Terrorism and Extremism

November 21, 2019

An imprecise science: Assessing interventions for the prevention, disengagement and de-radicalisation of left and right-wing extremists

This report examines global approaches to challenging political extremism, based on 19 interviews with practitioners from seven countries.

Education, Far-Left Extremism, Far-Right Extremism, Resources, Training and Educational Resources

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