(CNN) - Operation Overlord was launched over 76 years ago on June 6, 1944. Commonly known as D-Day -- a military term for the first day of a combat operation -- it was the largest seaborne invation in history and it kick-started the Battle of Normandy, which successfully opened a second, Western front in Nazi-occupied Europe.
"Many people in the city see museums as sage places for having meaningful conversation about diffult subjects. Art is sometimes a bridge todo that," Marianne Lamonaca told CNN.
"We're saying it's not too late, but you have to have a plan. Police are overwhelmed, they can't be everywhere. They can't handle everything." he said.