Pro-Palestinian demonstrators disrupted Radiohead's performance at the TRNSMT Festival in Glasgow on Friday in a protest against the British rock band's Israel concert slated for July 19. The demonstration appeared to be met with disdain by frontman Thom Yorke, who reportedly swore at the protesters.

According to the website consequenceofsound.net, ralliers associated with various pro-Palestinian groups protested outside the festival grounds prior to Radiohead's show. Once the band took to the stage, several demonstrators waved pro-Palestinian flags and at least one sign, which read "Radiohead: #CancelTelAviv."

Those in attendance reportedly claimed that Yorke, who seemed agitated by the protest, repeatedly shouted to the crowd "Some fucking people!" and flashed his middle finger. The account Glasgow PalAction, which tweets with the handle @GlasgowBDS, wrote that Yorke swore at fans.

While it is unclear how Yorke reacted to the protest, the rocker has opened up about calls for the band to boycott Israel.

In April, nearly 50 performers and artists, including Pink Floyd's Roger Waters and Archbishop Desmond Tutu, signed an open letter calling on Radiohead to cancel its concert in Israel as part of the wider boycott, divestment and sanctions movement that supports an intellectual, economic and cultural boycott of the country.

Radiohead's show, part of the tour for the group's latest album, "A Moon Shaped Pool," is set to take place at Tel Aviv's Yarkon Park on July 19.

Talking to Rolling Stone, Yorke blasted boycott calls as “offensive” and described his feelings on the criticism from fellow artists.

Open gallery view Radiohead's frontman, Thom Yorke. Credit: ANDY BUCHANAN/AFP

“It’s deeply disrespectful to assume that we’re either being misinformed or that we’re so retarded we can’t make these decisions ourselves,” Yorke said, pointing to Radiohead guitarist Jonny Greenwood’s experiences in the country; Greenwood’s wife, Israeli born Sharona Katan, considers herself an Arab Jew.

“Just to assume that we know nothing about this. Just to throw the word ‘apartheid’ around and think that’s enough. It’s fucking weird. It’s such an extraordinary waste of energy. Energy that could be used in a more positive way,” Yorke told the magazine.