Taylor Swift has accused US President Donald Trump of "stoking the fires of white supremacy and racism".
The singer criticised Mr Trump for his response to violent protests in Minneapolis over an incident where a black man died while being arrested.
A video of the incident appeared to show George Floyd gasping for breath while a white police officer knelt on his neck before he died on Monday night.
In a tweet which tagged the President, Swift said: "After stoking the fires of white supremacy and racism your entire presidency, you have the nerve to feign moral superiority before threatening violence?"
She added: "We will vote you out in November."
The singer also quoted a tweet from the President that he said was addressed at the "thugs" who are "dishonouring the memory of George Floyd" with the protests.
Mr Trump added: "Any difficulty and we will assume control but, when the looting starts, the shooting starts."
Twitter placed a message alongside his tweet, warning that it breached the site's rules for glorifying violence.
Mr Trump has claimed that he has been unfairly treated by the social media platform, and accused it of targeting him and his supporters.