The nation stopped yesterday and remembered the terrorist attacks from a decade ago that changed everything, as former President George W. Bush joined current President Barack Obama at the unveiling of the 9/11 Memorial in New York City.
Paul Simon sang an acoustic version of "The Sound of Silence" at the event, while others from Hollywood chimed in via Twitter. We've posted a few of their responses below, as well as an ABC News tribute set to Beyonce's "I Was Here."
Eva Longoria: “My heart goes out to all the families of the 9/11 victims. God Bless America!”
Kim Kardashian: “My thoughts and prayers go out to all of the families affected by the awful tragedy of 9/11."
Mariah Carey: “9/11: A time to honor, reflect. A decade later, nation remembers.”
Ashton Kutcher: “I got mad respect for the people that suffered in 9/11.”
Lea Michele: “Feeling so thankful and blessed today... And so happy to be with all my family and friends in this city I love with all my heart... NYC is one of the most strong & beautiful places in the world. I feel so blessed & proud today to have been born and raised in this city.”