Calling Saturday's Pittsburgh synagogue shooting an "evil anti-Semitic attack," President Donald Trump ordered flags at federal buildings flown at half-staff in respect for the 11 people killed and six wounded in the attack victims. The president planned to travel to Pittsburgh, while politicians, celebrities and religious leaders of all stripes condemned the attack.

Robert Bowers, 46, allegedly shot up the Tree of Life Synagogue in Pittsburgh's Squirrel Hill neighborhood during a baby-naming ceremony. After authorities subdued him, he allegedly told a police officer: "They're committing genocide to my people. I just want to kill Jews," according to court papers.

People pay respects at memorial for Saturday's Pittsburgh synagogue shooting.
People pay respects at memorial for Saturday's Pittsburgh synagogue shooting.

Condemnation came from across the political spectrum via Twitter:

All of America is in mourning over the mass murder of Jewish Americans at the Tree of Life Synagogue in Pittsburgh. We pray for those who perished and their loved ones, and our hearts go out to the brave police officers who sustained serious injuries...

— Donald J. Trump (@realDonaldTrump) October 27, 2018

We grieve for the Americans murdered in Pittsburgh. All of us have to fight the rise of anti-Semitism and hateful rhetoric against those who look, love, or pray differently. And we have to stop making it so easy for those who want to harm the innocent to get their hands on a gun.

— Barack Obama (@BarackObama) October 27, 2018
World leaders also weighed in:

"I'm deeply shocked by the reports of a shooting at a synagogue in the US today. Our thoughts are with the Jewish community in Pittsburgh and all those affected by this sickening and cowardly act." - PM @theresa_may

— UK Prime Minister (@10DowningStreet) October 27, 2018

Canadians' hearts are with the Jewish community in Pittsburgh today, as they endured a horrific anti-Semitic attack while at prayer. May the families of those murdered be comforted, and may the injured recover quickly and fully.

— Justin Trudeau (@JustinTrudeau) October 27, 2018

I was heartbroken and appalled by the murderous attack on a Pittsburgh synagogue today: pic.twitter.com/mwSWepc87x

— PM of Israel (@IsraeliPM) October 27, 2018

"When you spew hate speech, people act on it. Very simple. And this is the result. A lot of people dead. Senselessly," Stephen Cohen, co-president of New Light Congregation, which rents space at the Tree of Life synagogue in Pittsburgh, PA, told the Associated Press.

(Corey Goldman contributed to this report.)

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