Forgive my lack of knowledge into North American history. The other day I was thinking about all the violence in Mexico in the last ten years and wondered, "Is this the most violence North America has seen in a century?". Have there been any other recent events with this much violent loss of life on North American soil? Obviously, 9/11 killed thousands. And many North American cities have been plagued by violence in for decades. But what other events in the last 100 years can we point to as this level of violence? Would we have to go all the way back to the turn of the last century? Seeking enlightenment here.
Definitely not, seeing as the Mexican Revolution occurred from 1910 to circa 1920 (although much of the fighting had ceased by 1917) and the resulting conflict killed 'a lot' of people; I'm being vague here because the number is incredibly controversial, and the Mexican Revolution is an extremely complicated period of history. The most honest answer I can find so far is a demographic specialist admitting;
'There is no consensus among scholars regarding the demographic impact of the Mexican revolution or its components. Total losses range from 1.9 to 3.5 million.'
(Source: http://www.hist.umn.edu/~rmccaa/missmill/mxrev.htm)
Not to mention that the following Cristero War killed more from 1926-29, although I can't even find a collection of numbers that come anywhere close to agreeing how many people that might be. The internet's more reputable places claim from 30,000 to 200,000, and I can't in good conscience approve of something that vague, and Mexican History is far from my specialty. I plead for someone with a North American focus to follow up with some better numbers.