Samuel Langhorne Clemens (30 November 1835 – 21 April 1910), known by his pen name Mark Twain, was an American writer, humorist, entrepreneur, publisher, and lecturer.
His novels include The Adventures of Tom Sawyer (1876) and its sequel, the Adventures of Huckleberry Finn (1885). The latter book, despite being anti-slavery and depicting Blacks positively, is today often criticized for use of perceived racial stereotypes. Wikipedia lists the Black Jim character as a "Magical Negro".
In 1898, he wrote the essay Concerning The Jews, Wikipedia has a misleading article on the essay, not mentioning aspects such as Twain's view that anti-Semitism was caused by factors such as large Jewish influence.