Members of Leicester's Secular Society will gather at the Clock Tower tomorrow to remember those killed in the terror attacks in France.
On Wednesday, brothers Said and Cherif Kouachi killed 12 people at the Charlie Hebdo magazine offices in Paris.
They were shot dead as they fled a warehouse north of Paris, firing at police.
The death toll increased after a stand-off at a kosher supermarket yesterday involving police and gunmen linked to the Kouachi brothers.
Now, people in Leicester are being invited to gather at the Clock Tower at 2pm tomorrow to remember the innocent people who lost their lives as a result of the attacks and stand up for freedom of expression.
Gush Bhumbra, president of Leicester Secular Society, which is organising the event, said "We must stand for our right to free expression or we will lose that right.
"The only rights we can ever have are those we are prepared to take a stand over. Totalitarian ideologies will take for themselves the right to rule our lives, to tell us what we can do or say or even think, if we let them.
"This barbarous attack on the free press deserves only our contempt and commitment to maintain freedom of expression."