Do you have to be able to say everything on Twitter and Facebook? Is Instagram morally obliged to remove photos from attacks? Should we allow the terrorist group to recruit new members on the internet?

Stam defended his dissertation ‘Freedom of speech and the suppression of discrimination in the Netherlands: a constitutional-developmental approach’ on 12 November 2025. The doctoral research was supervised by Afshan Ellian and Bastiaan Rijpkema

On 12 November Ingrid Leijten was a guest on Dutch NOS NPO Radio 1 programme Met het Oog op Morgen. She was asked to speak about the right to freedom of expression.

Press freedom in Indonesia is still under pressure, despite the demise of Soeharto’s regime in 1998

From Incident to Precedent

The Europa Institute has invited Dorjana Bojanovska from Macedonia to visit Leiden Law School to conduct her master thesis research from 6 March - 31 March 2017. Dorjana is a student at the Comparative Constitutional Law program at the Legal Studies Department of the Central European University. The…

The aim of this research is to define the relationship between sources of articulation for different kinds of instrument in the period between the beginning of XVI century (first extant indications) and the end of XVIII century.

On 10 June 2021, Merinda Stewart defended her thesis 'Freedom of Overflight: A Study of Coastal State Jurisdiction in International Airspace'. The doctoral research was supervised by Prof. P.M.J. Mendes de Leon en Prof. J.J. Rijpma.

Performances of solo keyboard repertoire can sound more or less polyphonic depending on the performer’s use of divergence in expression.

This study investigates the perception and production of emotional prosody by native and non-native listeners and speakers, i.e. Chinese and Dutch listeners and speakers, including Dutch L2 learners of Chinese.

Jurisprudence is a philosophical introduction to the law. This subject is taught by the department of Jurisprudence.

On 30 November, Florian Theissen defended the thesis 'Sincerely believing in freedom: a reconstruction and comparison of the interpretation of the freedom of religion and belief on the Canadian Supreme Court, the South African Constitutional Court and the European Court of Human Rights'. The doctoral…

The Press Freedom Monitor is set to be presented during this year’s World Press Freedom Day celebrations on 3 May. To mark this occasion, the interactive media museum Beeld & Geluid in The Hague will publish a three-part podcast series.

In this article, Sophie Vériter examines the EU’s unprecedented ban on Russian state media following the invasion of Ukraine, using securitisation theory

On 5 May we celebrate freedom, a basic human right that should not be taken for granted. We asked international students and staff what it means to them.

NETHATE is a Marie Skłodowska-Curie Actions (MSCA) project seeking to investigate the roots, societal impact and mitigation strategies of hate in offline and online foras.

DNA carries various forms of information. Out of these forms of information the most well-known is classical genetic information.

Authorities in Denmark and Sweden are examining whether it is possible to ban Quran burning following recent incidents. These have caused tension in many Islamic countries as well as in the countries where they occurred.

Online platforms such as YouTube, Facebook, and X (formerly Twitter) have become part and parcel of everyday media use. Journalists incorporate posts from politicians into newspaper reports, scientists share their insights in short posts or videos, and the judiciary uses social media to explain their…

On 3 May, World Press Freedom Day was held and the Dutch 2022 'Persvrijheidsmonitor' was presented. The safety of journalists in 2022 was the most important theme in the area of press freedom in the Netherlands. Tarlach McGonagle, Professor of Medial Law & Information Society in Leiden, and Otto Volgenant,…

Recently Cambridge University Press published dr. Jan Osters monograph “Media Freedom as a Fundamental Right”.

What does academic freedom mean? And how do we give shape to it in Leiden? The Academic Freedom Core Team considered these questions and presented its final report on 17 June.

The gripping story of a collective passion for freedom that shook the world.

In recent decades, the Netherlands’ struggle with multiculturalism has caused an upsurge in public interest in the relationship between state and religion. In this, the Dutch address a subject relevant not just to them, but to all of Europe.

Music and language both communicate through sound, including timing and pitch. While language mainly conveys semantic meaning, instrumental music does not, and is typically seen as expressing emotion. This project investigates how well listeners recognize intended expressive feelings in music, instructed…

Promotores: J.N. Kok, H.J. Hoogeboom

Arts and leisure, Arts and leisure

Participation in research programmes

On 1 June 2022, Tom Herrenberg defended the thesis 'Prosecutorial Discretion in International Criminal Justice'. The doctoral research was supervised by Prof. P.B. Cliteur and Prof. B.R. Rijpkema.

Baroque flautist Jed Wentz followed two years of dancing classes in order to develop the right feeling for the gestures required for the Baroque French opera genre ‘tragédie en musique’. In his dissertation, the links between gesture affect and rhythmic freedom in the performance of the tragédie en…

eLaw at Leiden University leads Europe in exploring the intersection of law and digital technologies.

In October, the Provincial Executive in Friesland reprimanded four civil servants who had signed an incendiary letter asking the government to adopt a more active climate policy. Wim Voermans, Professor of Constitutional and Administrative Law, feels that the Executive made a mistake.

Sasse, van Breen, Spears & Gordijn demonstrated an anger gap in response to sexism which was larger for women than for men and found evidence that expressed anger was associated with instrumental concerns.

As of 1 May 2025 Dr. Vasiliki Kosta has been appointed member of the standing Committee for Freedom of Scientific Practice (Commissie voor Vrijheid van Wetenschapsbeoefening - CVW) of the Royal Netherlands Academy of Arts and Sciences (KNAW).

In the public debate on the coronavirus, bold assertions from academics, doctors and other medical practitioners are often heard. For example, that the coronavirus would be no more deadly than the flu. Or that measures to combat the virus like wearing face coverings are unnecessary.

President Putin will be officially opening the Netherlands–Russia Year on 8 April in Amsterdam. Leiden Slavist Sjeng Scheijen was responsible for putting together the cultural programme. How much freedom did he have in doing so? ‘The Dutch photography project on the demolition of Sochi districts was…

Vasiliki Kosta gave a presentation during the session ‘Building Academic Freedom’ taking place at Leiden University on 25 November 2025.

In ‘Dimensions of Free Speech’, Devrim Kabasakal Badamchi (Leiden University Institute of Political Science) offers a new theoretical framework for free speech by critically analysing the major justifications for free speech. Kabasakal Badamchi argues for a justification: namely the double-grounded…

This thesis focuses on the concepts of freedo and fixity as two central topics of my artistic research. I present, analyze. and contextualize four of my works which have explicit links to fleedom and fixify and which demonstrate the dynamic interrelationship between the two.

In the light of the fragility of current liberal democracies, this dissertation aims to contribute to rethinking political order by reconstructing Hegel’s account in the Philosophy of Right.

In navolging van Duitsland en het Verenigd Koninkrijk, wil de ministerraad een nieuw wetsvoorstel, om verheerlijking van terrorisme en steunbetuiging aan terroristische organisaties strafbaar te stellen. Wim Voermans, hoogleraar Staatsrecht, duidt de zaak in Dagblad Trouw.

On 22 November 2018, Els De Busser spoke at a panel during the conference