The Athens Bar Association stages a two-day strike opposing social security reforms.

President of the Coalition of the Radical Left (SYRIZA) Alexis Tsipras visits Komotini. At noon he will address a conference on “Social Security, Education and Social Movements: Youth in the Foreground and the Role of the Left,” hosted by the Democritus University of Thrace.

Communist Party general secretary Aleka Papariga visits Ioannina University.

The Hellenic Criminologists’ Society hosts a conference on “The Criminal Penalty for Corruption in the Public and Private Sector,” at 7 p.m. at the Athens Bar Association. Tel. 210.382.0125 or log on to www.dsa.gr. or www.hcba.gr.

The Greek Journalists’ Union (ESIEA) is hosting a conference on “The Environment and the Mass Media,” at 11 a.m. at its premises (20 Academias). There will be a presentation of the publication titled “Environment SOS,” while members of Greenpeace, WWF Hellas and Mesogeios SOS will speak. Tel. 210.363.2601.

Panteion University is hosting a conference on “Radio, TV and Quality,” at 6 p.m. at the University. Deputy Education Minister Andreas Lykourentzos will speak. For further details, log on to www.panteion.gr.

The Hellenic Foundation for European and Foreign Policy (ELIAMEP) hosts a lecture on “Serbia and the European Union,” by Deputy Prime Minister of Serbia Bozidar Djelic. At 1 p.m. at the Foreign Ministry. Tel. 210.725.7124 or log on to www.eliamep.gr.

International Children’s Book Day.

The University of Macedonia hosts a conference on “The New Political Landscape in Greece,” starting at noon at the university’s facilities. To Friday. Former president of the Coalition of the Radical Left Nikos Constantopoulos and New Democracy MP Kyriakos Mitsotakis will speak. For details, log on to www.uom.gr.

Finance Minister Giorgos Alogoskoufis to attend informal Ecofin meeting in Slovenia. To Saturday.

The Aristotle University of Thessaloniki is hosting a round-table discussion on “Children’s Rights: Violations and Protection-International Contracts,” to commemorate the 60th anniversary of the Universal Declaration of Human Rights. The conference begins at 5.45 p.m. at the Thessaloniki History Center. For details, call 2310.997.158 or log on to www.auth.gr.

The Center for European Constitutional Law and the Indian Educational Mission host a conference on “Human Rights in India,” at 7 p.m. at the Athens Acropol Hotel. PASOK MP Evangelos Venizelos will speak. Tel. 210.362.3089 or log on to www.cecl.gr.