'Delusional president an accomplice to domestic terrorism'
The Anne Frank Centre for Mutual Respect has called on Twitter to suspend Donald Trump's account following his comments on the violence in Charlottesville.
Mr Trump has been widely criticised for saying that "both sides" were to blame for the deadly clashes and for failing to condemn far-right demonstrators outright for the violence.
The Anne Frank Centre, an organisation which addresses civil and human rights across America, called Mr Trump "an accomplice to domestic terrorism".
In a statement, the centre's executive director, Steven Goldstein, called the president "delusional".
"Though the president finally mentioned, after long, painful three days, the KKK, neo-Nazis and white supremacists, again he insisted on saying 'others'," Mr Goldstein said.
"And the president made it worse. He said we should all be united, but there's no way on God's earth will we ever unite with Nazis. That is not what the Greatest Generation fought and died for.
"Finally, what planet has the president been living on when he just said we all salute the same flag? We don't salute the Nazi flag as the white supremacists in Charlottesville do. He is delusional."
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Meanwhile, the Holocaust Educational Trust said the actions of far-right groups in Charlottesville were shocking and horrifying.
Chief executive Karen Pollock said: "The Holocaust did not start with the gas chambers, it started with words; with hate-filled rhetoric. To therefore see neo-Nazi, racist and anti-Semitic symbols and language used in Charlottesville should shock and horrify all of us.
"Such hate has no place in our society and we all have a responsibility to act wherever it rears its head."
Mr Trump said in a statement following the Charlottesville violence: "We condemn in the strongest possible terms this egregious display of hatred, bigotry, and violence. It has no place in America. Racism is evil. And those who cause violence in its name are criminals and thugs, including the KKK, neo-Nazis, white supremacists, and other hate groups that are repugnant to everything we hold dear as Americans."