President Donald Trump is skipping the Ground Zero ceremony marking the 25th anniversary of 9/11 after reportedly being denied a request to give a speech at the World Trade Center site. Trump is expected to attend the Pentagon instead, where he can address the crowd. The decision has sparked fierce online reactions, with critics mocking his reported desire for a microphone and accusing him of wanting to make the solemn anniversary about himself. Here’s what happened and why Trump is staying away.