A memorial plaque on the Limmat in Zürich to Felix Manz and five other Anabaptists drowned in the river between 1527 and 1532.Image: Roland zh · CC BY-SA 3.0Radicals in Zürich baptise one another, beginning the Anabaptist movement
In Zürich the reformer Huldrych Zwingli had broken with Rome, but some of his young followers, led by Conrad Grebel and Felix Manz, wanted to go further. They believed baptism should be for adults who chose the faith for themselves, not for infants. On 18 January 1525 the city council ordered all parents to have their babies baptised within eight days or be banished. On the night of 21 January about fifteen of the radicals met at the house of Manz’s mother. Grebel baptised the former priest George Blaurock, who then baptised the others. Their enemies called them Anabaptists, ‘re-baptisers’. They were persecuted by Catholics and Protestants alike, and Manz was drowned in the river Limmat two years later, but the movement survived; the Mennonites, Amish and Hutterites all descend from it.
Source: Encyclopaedia Britannica: Swiss Brethren ↗
Tasman’s two ships at anchor off Tongatapu, with the islanders’ canoes and gifts; a woodcut after Isaack Gilsemans, the expedition’s artist.Image: 
The execution of Louis XVI on the Place de la Révolution, 21 January 1793, in a French print of the 1790s (Rijksmuseum).Image: 
Leoš Janáček, photographed in 1914.Image: 
Henri Rougier and his mechanic with the 25-horsepower Turcat-Méry before the first Monte Carlo Rally.Image: 
Members of the first Dáil photographed at the Mansion House, Dublin, at its session of April 1919.Image: 
USS Nautilus slides into the Thames River at Groton, Connecticut, 21 January 1954.Image: 
Contaminated ice being loaded into steel tanks for shipment to the United States during the Thule clean-up, 1968.Image: 
A British Airways Concorde, from a publicity image of 1976.Image: 
Jimmy Carter, president of the United States from 1977 to 1981, in his official portrait.Image: 
Jamil Mahuad, the ousted president, photographed in 2007.Image: