This weekend marks the anniversary of the uprising and is still very much part of Greek culture, tomorrow schools will do a commemoration activity (usually a play depicting events at the Polytechnic) before finishing early.
This does in a lot of ways symbolise the rebirth of Greece and Kefalonia after many hard years following the Greek genocide, world wars, devastation caused by 1953 earthquake (locally) then the country being managed by a dictatorship.
Below is some further background information.
What Happened In History
Since April 21, 1967, Greece had been under the dictatorial rule of the military, a regime which abolished civil rights, dissolved political parties and exiled, imprisoned and tortured politicians and citizens based on their political beliefs.
On November 14th of 1973 students begin gathering at the Athens Polytechnic to demonstrate against the Junta. This demonstration which is coordinated with occupations of campuses in Patras and Thessaloniki, turns into a student rebellion that gathers strength every day as more and more people join, some students but many working class and the well-educated. On the 16th the students and fellow demonstrators attempt to march from the Polytechnic to Syntagma square but they are halted by the police.
As more people gather at the Polytechnic, already there are plans for ending the student rebellion, using tanks from the nearby bases in and around Athens. The students are preparing for a siege, collecting food and medical supplies, building barricades and broadcasting on a clandestine radio station that the time is right to overthrow the junta and calling for their countrymen to join them in central Athens. Anti-Junta and anti-American graffiti is painted on buildings and passing buses which spread their message throughout the city.
At 2am on November 17th, tanks are ordered to crush the student rebellion at the Polytechnic. At 2:15 a group of students come out to negotiate a surrender asking for half an hour to evacuate the campus. The officers in charge will only give them fifteen minutes but don’t even wait for ten. At 3am a tank crashes through the gate of the polytechnic and police and military storm the campus. As the gate crashes to the ground students rush out to escape and are beaten with clubs and arrested. At least 34 demonstrators are killed though there are rumors that the number is much higher. Several hundred are injured and almost a thousand are arrested at the school and at the Ministry of Public Order which had been under siege by demonstrators.
For the next two days crowds attempting to gather in central Athens are broken up by police and soldiers who are everywhere. Tanks are parked in squares around the city and surround the Parliament building. The rebellion at the Polytechnic is over and the country is put under martial law for the next week. Groups larger than four people are not permitted to gather and there is a curfew between 7pm and 5am.
How This Day Is Commemorated In Greece
November 17 is observed as a holiday in Greece for all educational establishments. Commemorative services are held and students attend school only for these, while some schools and all universities stay closed on this day. The central location for the commemoration is the campus of the Polytechneio. The campus is closed on the 15th (the day the students first occupied the campus on 1973). The commemoration day ends traditionally with a demonstration that begins from the campus of the Polytechneio and ends at the United States embassy.
Source of background information – xpatathens.com