His response to New Zealand's murder, in which 49 people died in an attack on two mosques, also raised fresh questions about his attitude towards Islam following the long history of anti-Muslim rhetoric – and about the extent of the President's Responsibilities to moderate his language given the increment of the movements of white supremacy around the world.
On Twitter and in comments to the Oval Office, Trump is clear on the executions. But he does not deliver a message of empathy and support to American Muslims, who may be frightened of security being raised in US mosques.
"I spoke to New Zealand's Chief Minister Ardern to express the sadness of our entire nation following the massive terror attacks in two mosques," Trump told the Oval Office on Friday afternoon after first condemning raid as "a terrible massacre in Mosques" on Twitter.
"The sacred places of worship have become the scene of evil murder," the President said. "We've seen everything going on, it's a terrible and horrible thing."
But asked if he saw an alarming increase in the movements of white supremacy around the world, Trump said he did not blame a small group of people "with a very, very serious problem." He also said to reporters that he did not see the manifesto linked to by a social media account believed to belong to one of the attackers, who named Trump by name and saw him as a symbol of renewed white identity.
As the President does not reach Muslims all over the world, his daughter offers a kind of language that can be expected from a more conventional leader.
White House spokeswoman Sarah Sanders calls Christchurch killings a "vicious hatred of hate," though he does not specifically mention that the attack is against Muslims.
Trump's failure to do more to point out that worshipers who died in Christchurch were Muslims representing a double standard, given that he was more clear in ascribi of a religious motivation to other murders.
Trump often walked in rapidly when a Muslim extremist became a perpetrator of an attack and Muslims were not victims, or used such attacks to strengthen his political arguments.
And when he ran for office, "These are radical terrorists in Islam, and he does not mention the word, nor is Obama President," says Trump in a presidential debate, referring to Hillary Clinton. "Now, to solve a problem, you must say what's the problem, or at least say the name."
Equivocation on white nationalism
And Friday is not Trump's first drive to reduce the threat of white nationalism.
The President's comment on Friday white nationalism is not a growing problem that is different from the joy to which other world leaders reacted, and their clear judgment of white supremacist rhetoric and ideology.
Prime Minister of Britain May states that there is no place in society for "bad ideology that spurs and drives hatred and fear."
Australian Prime Minister Scott Morrison warns "a violent terrorist terrorist attack on the right."
New Zealand Prime Minister Jacinda Ardern said that the alleged perpetrator of the attack had "extreme extremist views in New Zealand and in fact, there was no place in the world."
In tweet posted before Trump's comments to the Oval Office The Democratic former President Joe Biden – a possible White House candidate in 2020 – appeared with Trump in his mind.
"Whether it is anti-Semitism in Pittsburgh, racism in Charlottesville, or xenophobia and Islamophobia today in Christchurch, Violent hate is on the march at home and abroad. We can not stand as mosques have become scenes in killing, "Biden tweeted.
"Silence is complicity," she added. "Our children are listening. The time to speak is right now."
Democratic Rep Joaquin Castro of Texas condemned Trump for what he considered to be an extremist rhetoric.
"The cost is high, and the cost is part of what we have seen today. There are those who are out there who are not so inspired by that and have taken action," Castro told Wolf Blitzer at "The Situation Room."
The White House director of strategic communications Mercedes Schlapp told reporters on Friday that "daring to even make the connection between this deranged individual who committed this evil crime to the President, repeatedly condemned to be powerful, racial. "
Trump's dismissal of the idea that white nationalism was on the rise contradicted the warning of his own government, and this is a characteristic example of how he ignores statistics that do not suit his political argument.
Trump's view also did not take into account the rise of white nationalist political groups in Europe, which saw large marches in some cities.
Ross Levitt CNN contributed to this story.