A projection on Jerusalem's Western Wall in its sacred Old City on Sunday night offered a message of support and solidarity for the victims of the Pittsburgh synagogue shooting.

An image of the Israeli flag beside the American flag was displayed on the Western Wall, which is considered a holy site in the Jewish faith. "We are with you - Pittsburgh!" the display reads.

People walk past a projection on the Old City wall in Jerusalem, Sunday, Oct. 28, 2018 in a commemoration of the victims of a deadly shooting at a Pittsburgh synagogue. https://t.co/cIZIbqME25 pic.twitter.com/kIKmfoaV7U — Fox News (@FoxNews) October 28, 2018

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The shooting in Pittsburgh's Squirrel Hill neighborhood killed 11 congregants at one of the area's largest and best-known synagogues.

The Anti-Defamation League says the shooting was the deadliest attack against Jews in U.S. history.

The shooter's social media accounts are filled with anti-Semitic vitriol and he reportedly shouted "all Jews must die" as he fired.

Federal prosecutors on Saturday night filed 29 charges against the suspect, Robert Bowers, including including 11 counts of use of a firearm to commit murder and 11 counts of obstruction of the exercise of religious beliefs resulting in death.

President Trump condemned the attack as anti-Semitic, calling it an “assault on humanity.”

“This evil anti-Semitic attack is an attack on all of us, it is an assault on humanity," he said. "It will require all of us working together to extract the hateful poison of anti-Semitism from our world. This was an anti-Semitic attack at its worst. The scourge of anti-Semitism cannot be ignored, cannot be tolerated and it cannot be allowed to continue … It must be confronted and condemned everywhere it rears its very ugly head."

A group of Jewish leaders on Sunday penned an open letter to Trump, saying he is not welcome in Pittsburgh until he denounces white nationalism following the shooting.

"Our Jewish community is not the only group you have targeted,” the Pittsburgh affiliate of Bend the Arc: A Jewish Partnership for Justice wrote. “You have also deliberately undermined the safety of people of color, Muslims, LGBTQ people, and people with disabilities. Yesterday’s massacre is not the first act of terror you incited against a minority group in our country.”

Trump faced widespread pushback after he failed to condemn white supremacy and asserted that there is “blame on both sides” after last year’s white supremacist rally in Charlottesville, Va.

Protesters at the rally chanted, "You will not replace us, Jews will not replace us."