A PALESTINIAN journalist has warned of a Muslim backlash over the failure of Australian authorities to grant him a visa in time to speak at today's Brisbane Writers Festival. Abdel Bari-Atwan, a best-selling author and among the last Western journalists to interview Osama bin Laden, was cancelled as a speaker at the festival yesterday as he waited for his visa application to be processed. Atwan, author of The Secret History of al-Qa'ida, accused the Howard Government of discrimination in delaying approval for his visa application, submitted on August 16, after giving notice to authorities of his intention to visit Australia....