4th » Haymarket affair: A bomb is thrown at policemen trying to break up a Labor movement e.g labor rally in Chicago, Illinois, United States, killing eight and wounding 60. The police fire into the crowd.
5th » The Bay View Tragedy: A militia fires into a crowd of protesters in Milwaukee, killing seven.
8th » Pharmacist John Pemberton first sells a Carbonation known as carbonated beverage named "Coca-Cola" as a patent medicine.
29th » The pharmacist John Pemberton places his first advertising e.g advertisement for Coca-Cola, which appeared in 'The Atlanta Journal-Constitution e.g The Atlanta Journal'.
Famous Birthdays on May in 1886
2nd » Gottfried Benn, German author and poet (d. 1956)