Complex sentence: For a short time he became a noted abolitionist speaker and later a showman, but later lost the support of the abolitionist community, notably Frederick Douglass, who wished Brown had kept quiet about his escape so that more slaves could have escaped using similar means.
Split into simpler sentences: For a short time he became a noted abolitionist speaker and later a showman. He later lost the support of the abolitionist community, notably Frederick Douglass, who wished Brown had kept quiet about his escape so that more slaves could have escaped using similar means.