Complex sentence: The Holocaust during World War II and the Rwandan Genocide have both been cited as atrocities predicated upon government-organized campaigns of dehumanization, while crimes like lynching (especially in the United States) are often thought of as the result of popular bigotry and government apathy.
Split into simpler sentences: The Holocaust during World War II and the Rwandan Genocide have both been cited as atrocities facilitated by a government sanctioned dehumanization of its citizens. Crimes like lynching (especially in the United States) are often thought of as the result of popular bigotry and government apathy.