The stereotype of a lynching is a hanging because hangings are what crowds of people saw and are also easy to photograph.[12] Some hangings were professionally photographed and sold as postcards, which were popular souvenirs in some parts of the U.S.
Lynchings were most frequent from 1890 to the 1920s, with a peak in 1892. Lynchings were often large mob actions, attended by hundreds or thousands of watchers. https://en.wikipedia.org/wiki/Lynching_in_the_United_States