An American woman of Indian descent has accused White House press secretary Sean Spicer of racism after an exchange in an Apple store in Washington.
Shree Chauhan, 33, challenged Mr Spicer as he was shopping, asking: "How does it feel to work for a fascist?" - referring to President Donald Trump.
Mr Spicer said: "It's such a great country that allows you to be here."
She has been attacked online since posting the video, with critics branding her "vile" and accusing her of harassment.
The footage shows Mr Spicer responding to the initial barb by smiling and saying: "We have a great country."
Ms Chauhan, the founder of an education start-up, then asks him: "Have you helped with the Russia stuff - are you a criminal as well? Have you committed treason, too, just like the president?"
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Mr Spicer can then be heard saying: "It's such a great country that allows you to be here."
"What can you tell me about Russia, Mr Secretary?" the questioner persists.
Mr Spicer then walks away saying: "Thank you very much," while Ms Chauhan repeats: "You know you work for a fascist, right?"
In a blog post, Ms Chauhan wrote that she is an American citizen who was born and raised in the United States.
She said she was "stunned" by the press secretary's comment, writing: "That is racism and it is an implied threat. Think about the sheer audacity of Mr Spicer to say that to my face with a smile, knowing that he that he is being recorded on video and the position of power he holds in our government."
Ms Chauhan, who is the daughter of immigrants, acknowledged that she was "impolite" in her comments to the Trump aide.
She said she wanted to seize the "enormous opportunity... to get answers without the protections normally given to Mr Spicer".Image copyright Twitter / Shreec
Ms Chauhan hit back at her online critics,
It has been claimed that Mr Spicer's remark - "it's such a great country that allows you to be here" - may have meant it's great that Americans can approach presidential aides even while they are out shopping.
The right to free speech is protected in the US by the First Amendment.
Ms Chauhan has rejected that interpretation, saying that Mr Spicer should have said, "it's such a great country that allows dissent" if that was what he meant.
Mr Spicer does not appear to have commented on the incident.