British pop star Robbie Williams has announced that public safety concerns have led to the cancellation of his planned October 7 concert in Istanbul, Turkey. The date of the second anniversary of the Hamas attack on southern Israel was heavily criticized, as were Williams' past concerts in Israel, which led several Turkish NGOs and social media users to protest, accusing the singer of being a "Zionist."
It's also known that Williams has been quite open about the fact that his wife is Jewish and that they are raising their children Jewish.
On Instagram, the singer said he was deeply sorry for the cancellation but that the safety of his fans "comes first."
Over the years, major public events have faced unexpected safety threats, from natural disasters to deliberate attacks. Behind the scenes, organizers work to keep millions safe. In this gallery, we explore high-profile events that were canceled or delayed due to safety concerns. Click through to learn more.