After New Zealand singer Lorde faced an aggressive criticism for cancelling Israel's concert, more than 100 actors, singers and musicians signed a pledge of support for the singer.

The letter was published by the Guardian on Friday, and it was signed by well-known artists including Mark Ruffalo, Peter Gabriel, Roger Waters, Viggo Mortensen, Tom Morello, John Cusack, Julie Christie, Shepard Fairey, Eve Ensler, Angela Davis, Talib Kweli, and James Schamus.

The letter came following a full-page ad featured in the Washington Post, attacking Lorde for responding to a request by Palestinian activists in the BDS, who asked her to cancel its planned concert in Tel Aviv in June 2017, as part of a boycott movement against Israel for violating international rules.

The ad was sponsored by the Word Values Network, an organization run by, Shmuley Boteach, a supporter of US President Donald Trump whose main donors include right-wing settlement funder, Sheldon Adelson.

"We write in support of Lorde, who made public her decision not to perform in Israel and has now been branded a 'bigot’ in a full page advertisement in the Washington Post," the letter said.

"Shmuley Boteach, the author and promoter of the advert, supports Israel's illegal settlements and wrote last month on Breitbart to thank Donald Trump for 'electrifying the world’ with his recognition of Jerusalem as Israel's capital in defiance of international law. He has nothing to teach artists about human rights."

"We deplore the bullying tactics being used to defend injustice against Palestinians and to suppress an artist's freedom of conscience. We support Lorde's right to take a stand.”

Earlier in December, Lorde announced the cancellation of her planned musical concert in Tel Aviv, in response to a request by Palestinian activists, saying on her Twitter: “Noted! Been speaking w many people about this and considering all options. Thank u for educating me i am learning all the time too”, before officially announcing the concert is cancelled.