Eleven members of the Pittsburgh branch of the NGO, Bend the Arc: A Jewish Partnership for Justice, published a scathing letter to U.S. President Donald Trump denouncing his embrace of white nationalism and launched a petition with a series of demands following the deadly Saturday shooting at the Tree of Life Synagogue.

The petition which has over eighteen thousand signatures demands “you and the Republican Party: Fully denounce white nationalism, stop targeting and endangering all minorities, cease your assault on immigrants and refugees, and commit yourself to compassionate, democratic policies that recognize the dignity of all of us.”

The letter says that Trump is not welcome in the city until he meets these demands.

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“Our Jewish community is not the only group you have targeted,” the group 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.”

The president has “spread lies and sowed fear about migrant families in Central America,” the group added.

“The Torah teaches that every human being is made b’tzelem Elohim, in the image of God. This means all of us,” the letter said. “In our neighbors, Americans, and people worldwide who have reached out to give our community strength, there we find the image of God.”