Joseph Armand Robert Vaillancourt (French pronunciation: [ʒozɛf aʁmɑ̃ ʁɔbɛʁ vajɑ̃kuʁ]; born September 3, 1929) is a Canadian sculptor, painter and performance artist from Quebec.

The following day, seeing that the city's employees erased the inscription, he jumped on the sculpture during its dedication to reinscribe the phrase.

[7] Vaillancourt flew from Quebec to California after the incident, and spoke in favor of Bono's actions at U2's Oakland performance several days later.

[1] His archives, consisting of 500 cardboard boxes on metal shelves, plus nearly 100 notebooks in which he records all of his activities, are stored on the second floor of his house.

[1][10] His art has a political motivation, and, in addition to Quebec independence, he is concerned about environmental issues such as pollution caused by exploitation of oil sands, the destruction of honey bee populations, and human rights issues such as the rights of indigenous peoples.