Montrealers remembered the Holocaust on Wednesday with several ceremonies, including one at City Hall.

The Bialik High School Yiddish Choir performed as Mayor Denis Coderre presided over Yom HaShoah activities.

Fifty students from Marymount Academy attended to mark the importance of Holocaust education among youth.

Two Holocaust survivors spoke and the mayor lit six candles in memory of the six million jews who were killed during the Second World War.

"The world should know what happened, what has happened and it shouldn't happen again," said Willing Glazer.

"That's why we put on all these commemorations to bring back the memories and to think about the millions of people that died in vain."

Other Holocaust survivors spoke of how their rebuilt their lives after the Nazi genocide.

"It's such a horrific event where six million people were murdered, one and half million were children, that we have to tell people that this is what man does to other people, to other man," said Marcel Tenenbaum.

Charlotte Wexler, a survivor, told her story out loud for the first time to Herzliah High School students Thursday.

“It’s very complex. Until now, I didn't even tell my children. It's too hard,” she said.

Her grandsons, Herzliah students, convinced her to share what she went through. She was born in Yugoslavia and says she came from a very happy family with loving parents. But her family was ripped apart when her father was imprisoned.

“He walked on the street with the Jewish sign and they took him and he disappeared since then,” she said.

They fled and eventually she, her brother and mother were all sent to different Nazi camps.

At 12-years-old, she was put to work in a coal mine and factory. She willed herself to live, she says, for one reason.

“I forced myself to live because I figured not for me, but for my mother,” she explained.

One day she managed to escape and was reunited with her mother and brother.But the pain, the loss, the memories are overwhelming to this day, as they are for her two sons.

“She'll be 87 tomorrow and it's the first time she's talking about it and to me it's incredible,” said Bernie Wexler.

Holocaust survivors have commemorated Yom HaShoah for nearly 70 years, but only in 1999 did Quebec declare May 4th would be known as Holocaust Memorial day.