On This Day: May 28th

Former Formula One driver Takuma Sato wins his first Indianapolis 500, the first Japanese and Asian driver to do so. Double world champion Fernando Alonso retires from the race with an engine issue in his first entry of the event.

Harambe, a gorilla, is shot to death after grabbing a three-year-old boy in his enclosure at the Cincinnati Zoo and Botanical Garden, resulting in widespread criticism and sparking various internet memes.

Start of the Gezi Park protests in Turkey.

The Arkankergen massacre in Kazakhstan's Alakol District kills 15 people.

Malta votes on the introduction of divorce; the proposal was approved by 53% of voters, resulting in a law allowing divorce under certain conditions being enacted later in the year.

In West Bengal, India, the Jnaneswari Express train derailment and subsequent collision kills 148 passengers.

The first meeting of the Constituent Assembly of Nepal formally declares Nepal a republic, ending the 240-year reign of the Shah dynasty.

The Iraqi Governing Council chooses Ayad Allawi, a longtime anti-Saddam Hussein exile, as prime minister of Iraq's interim government.

Peter Hollingworth resigns as Governor-General of Australia following criticism of his handling of child sexual abuse allegations during his tenure as Anglican Archbishop of Brisbane.

The last steel girder is removed from the original World Trade Center site. Cleanup duties officially end with closing ceremonies at Ground Zero in Manhattan, New York City.