The event was organized by Spain's Vox party in Madrid under the banner "Make Europe Great Again." The leaders applauded President Trump's agenda and spoke of the turning point it presented Europe.
The violin, made over 300 years ago by a legendary luthier, had been expected to sell for a higher price. The proceeds will go toward a scholarship program at the New England Conservatory.
The Canadian government did not share its reasons for the decision, but it follows an investigation that shed doubt on the Oscar-winning singer's claims of Indigenous roots.