Thousands of people took to the streets in France on Sunday,.. after a killing that has shocked the nation to its core.
Last Friday, 47-year old history teacher Samuel Paty was beheaded by a suspected Islamist,presumably for showing his class cartoons of the Prophet Mohammad.
Some protesters held pictures of Samuel and held up signs bearing his name, saying they are all "Samuel' and demanding their freedom of expression be protected.
"We're here to defend the Republic, the values of the Republic: liberty, equality, fraternity and secularism. We can feel that the fatherland is threatened, that those values are under threat."
Others were there to fight for the rights of teachers.
"Teachers are one of the most important professions. Everything is based on education, it's not politicians that will change things."
The attacker was shot dead by police soon after murder.
The 18-year old was born in Russia and had been living in France as a refugee.
He reportedly asked students who Samuel was and followed him after school had finished.
A Muslim parent who was angered by the teacher's use of the cartoons posted his name and the school's address online in an effort to get him fired.
However, it's still unclear whether the attacker had a direct connection with the parent or was triggered to commit the murder as a result of the online campaign.
Although the killer was not found to be on the French government's terror database, France's leader called the killing of the teacher terrorism.
"Our compatriot was flagrantly attacked, he was a victim of an Islamist terrorist attack."
The cartoon of the Prophet Mohammad, published by the magazine Charlie Hebdo, sparked two deadly terrorist attacks against the publication in 2011 and 2015.
In light of the latest killing, prosecutors say France faces an escalating threat from terrorism.
Lee Kyung-eun, Arirang News.