More than 30 military students were injured in a mass pillow fight leading to a ban of the event in future years.
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Exiled Soviet leader Leon Trotsky was assassinated with an ice axe in Mexico City.
The World Health Organization (WHO) announced that measles cases were at an all-time record high, with 41,000 in the first half of the year alone.
A suicide bomber killed 57 people while injuring 66 in Gaziantep, Turkey.
The ''LZ 127 Graf Zeppelin” returned to Lakehurst, New Jersey, after being the first airship to circumference the earth in one journey.
President Andrew Johnson declared that the American civil war was over.
