The Worst Massacre Ever! Except
a few minor exceptions. I'll skip the savage massacres of Native American tribes and pick up the history lesson in 1887:
In 1887, at Hells Canyon on the Snake River in Wallowa County, Oregon, a gang of at least 7 white horse thieves robbed, shot or otherwise murdered and mutilated at least 34 Chinese immigrants who had set up camp to mine gold there. Most of the bodies were found months later by another group of Chinese immigrants who had arrived to mine gold in the area. Although 3 people were brought to trial, no one was convicted. In 2005, the area was renamed Chinese Massacre Cove to honor those dead.
In 1913, during another nationally publicized action known as the Ludlow Massacre, over 66 people were killed, including eleven children and two women who were burned alive. Sparked by a strike against the Rockefeller family-owned Colorado Fuel and Iron Corporation by the mostly foreign born Serb, Greek and Italian coal miners after one of their union organizers was murdered, . . .
In May and July, 1917, between 40 and 200 people were killed and 6000 blacks homes and businesses were burned to the ground in the East Saint Louis Riots (aka East Saint Louis Massacre). Considered the nation’s worst example of labor violence or race riots, these events occurred during the period known as the Great Migration, when southern blacks arrived in East St. Louis by the thousands, and were especially provoked when hundreds of black workers were brought in to replace white workers striking against the Aluminum Ore Works.
In 1921, a year when 64 lynchings were reported, the African American Greenwood business district of Tulsa, Oklahoma, was the site of shooting deaths of at least 40 people, most of whom are black, although the actual–but undocumented–death toll is said to be closer to 300. This site was then known as the “Negro’s Wall Street,”
I guess I mistakenly assumed that all American students had at least learned the haunting story of Wounded Knee, when in 1890, between 150 to 300 Lakota Sioux practitioners of the Ghost Dance were shot dead by a detachment of the U.S. 7th Cavalry Regiment.
The author's conclusion:
Because one sure effect, since the vast majority of these historical shootings were directed against Native Americans and blacks, is that the take-away could be that even in death, black and Indian lives don’t matter.
http://www.counterpunch.org/2016/06/17/purging-history-was-orlando-reall...

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Media accuracy
The author pointed out that this was hyped as "the worst massacre since 9/11, which it wasn't. By a single shooter? Maybe or even probably. My history of brutal, senseless American massacres is not sufficient to answer definitively.
We are a country of exceptionally brutal misanthropes no matter how the question is parsed.
"They'll say we're disturbing the peace, but there is no peace. What really bothers them is that we are disturbing the war." Howard Zinn