Violence erupted at a New York hotel after protesters heckled a speech by Turkey's President Recep Tayyip Erdogan with chants of "terrorist".
Mr Erdogan was addressing supporters in Turkish at the Marriott Marquis Hotel in Times Square when he was interrupted by several demonstrators.
Mr Erdogan is in New York for the UN General Assembly.
In footage from the speech on Thursday, protesters are seen being pushed and punched in the head as they are ejected from the venue by suited men.
Supporters of Mr Erdogan can be heard shouting the president's name in the footage, in attempts to muffle the protesters' chants.
The New York Police Department said that about five protesters had been "briefly detained" but that no arrests were made.
The US summoned the Turkish ambassador over the incident, which Washington police called a "brutal attack on peaceful protesters". »