Looks like I was wrong: riots were worse. Quick google search: http://www.sickchirpse.com/top-10-most-devastating-terrorist-attacks-by-death-toll/ http://www.s

Looks like I was wrong: riots were worse. Quick google search: http://www.sickchirpse.com/top-10-most-devastating-terrorist-attacks-by-death-toll/ http://www.sickchirpse.com/top-10-most-devastating-terrorist... http://listverse.com/2014/02/07/10-deadliest-riots-in-history/ http://listverse.com/2014/02/07/10-deadliest-riots-in-histor... According to those, worst terrorist attack was 9/11, with ~6k deaths in a single day. Most of the riots in the riot list had larger death tolls (ranging from anywhere between ~7k in a single day, to over 1M over a period of time).