New Democratic Party leadership election, 2017 Canada's left-leaning New Democratic Party elects Jagmeet Singh its leader.
The government of Catalonia declares that the "yes"-to-independence-vote has won a landslide victory.
Guardia Civil riot police officers and Catalonia's Mossos d'Esquadra clash in Sant Joan de Vilatorrada as tensions rise between the rival police forces.
The Mayor of Barcelona Ada Colau calls on Spanish Prime Minister Mariano Rajoy to resign following the police crackdown on Catalan protestors which has left hundreds injured.
Spanish riot police clash with some protesters in various cities and towns, with 844 people and 33 police reported injured.
The government of Catalonia holds a public referendum on whether their region should gain independence from Spain, despite the Spanish courts and government declaring the vote illegal and deploying police to deter voters. Catalan President Carles Puigdemont says Catalonia "has won the right to become an independent state."
O. J. Simpson robbery case Nevada prison authorities release former NFL player O. J. Simpson on parole after serving nine years for a 2007 Las Vegas armed robbery. Previously, a jury had acquitted Simpson of the 1995 murder of his ex-wife Nicole Brown Simpson and her friend Ron Goldman.
Vanuatu Vanuatu begins evacuating 11,000 islanders from the island of Ambae because of the erupting volcano Manaro Voui which pollutes the water.
Skanska Skanska USA implodes the Old Kosciuszko Bridge in New York City after 78 years of connecting Brooklyn and Queens.
United Kingdom The United Kingdom's Monarch Airlines goes into financial bankruptcy administration, suspending all flights, cancelling 300 thousand bookings, and leaving tens of thousands of passengers stranded.
2017 Las Vegas shooting A gunman opens fire in Paradise, Nevada, at the Mandalay Bay Resort and Casino from the upper floors down upon a Jason Aldean outdoor concert, with at least 59 people dead and 527 others injured. Authorities believe the lone gunman is dead.
Syrian civil war The Islamic State group seizes the Al-Qaryatain town in the central province of Homs in a surprise attack against Syrian government forces.
Anglophone problem (Cameroon) Soldiers in Buea and Bamenda, Cameroon, shoot dead a total of at least eight people during various protests by Anglophone separatists.
Marseille stabbing A knife-wielding man at Saint Charles train station in Marseille, France, kills two women. Police kill the suspect and are treating the attack as a terrorist incident. ISIL claims responsibility.
Yemeni Crisis (2011–present) Houthi forces claim to have shot down a U.S. MQ-9 Reaper drone over the Yemeni capital Sana'a. Footage released by Saba News Agency appears to show crowds gathering around the wreckage of an aircraft.