Yom Kippur, the holiest day of the year in Judaism, centers on the idea of forgiveness.

But what does forgiveness mean in the aftermath of a mass murder? On the first Yom Kippur after the Tree of Life synagogue shootings, what would a survivor say about forgiving the man who shot him and killed his friends?

Hundreds of people — overflowing the neat rows of chairs to sit on the floor and stand against walls — came to a Yom Kippur panel discussion Wednesday at the Jewish Community Center in Squirrel Hill to find out.

The panel also included Ivy Schamis, a social studies teacher and survivor of the shooting at Marjory Stoneman Douglas High School in Parkland, Fla, and it was moderated by the Rev. Tim Smith, a pastor and community advocate in Hazelwood.