Some of the survivors of the Parkland, Florida school shooting were in Brooklyn on Sunday, attending an annual Jewish leadership conference for teenagers.

More than 2,500 Jewish teenagers from around the world gathered at the tenth annual CTeen Summit to share messages of strength and unity for future generations.

A video memorial was presented Sunday, the last day of the summit, for the victims and survivors, some of whom have stayed in the city this weekend for the conference.

"It means a lot," said Christopher Branum, a freshman who attends Marjory Stoneman Douglas High School, the site of the shooting. "It means that people actually care about what happened and want to make a difference, and I am proud to be a part of this."

"It was actually pretty traumatic there, going into school, but it's nice to see how everybody's sticking together and everybody's, you know, being strong, coming together," said Maverick Reynolds, who is also a freshman at the school.

17 people were killed on Valentine's Day, when Nikolas Cruz, 19, opened fire inside the high school, which he once attended. He is being held at Broward County Jail without bail.

While politics was not part of the video tribute, some of the teenage survivors who attended the conference said they hoped the leadership message spread at the event will help evoke change throughout the country.

"I hope that the government can focus on better gun control and that they can provide more money to help with mental illnesses," said 14-year-old Lauren Berg, who lost a friend, Gina Montalto, in the shooting.

The tribute ended with a pledge for mitzvahs — good deeds — in the victims' honor, with the hope that goodness and kindness will prevail over evil.