hobby1. 1  an activity or interest pursued for pleasure or relaxation and not as a main occupation: Her hobbies include stamp-collecting and woodcarving. 2  a child's hobbyhorse. 3  Archaic. a small horse. 4  ride a hobby, to concern oneself excessively with a favorite notion or activity. Also, ride a hobbyhorse.
Even in 1915, D.W. Griffith's Civil War epic caused a stir for its stereotypical depiction of African-Americans. This groundbreaking, landmark American film masterpiece about two families during the Civil War and Reconstruction periods was also extremely controversial and explicitly racist.
According to Wikipedia, which is wrong, Berlin Alexanderplatz (931 minutes or 15 hours) was the longest film. Other long films include Shoah (566 minutes, or nine hours) and Evolution of a Filipino Family (643 minutes, or 11 hours).