From Yahoo News:
A man was gravely wounded in a gun battle with police in Ferguson, Missouri on Sunday night after a day of peaceful rallies to mark the fatal shooting of an unarmed black teenager by a white officer one year ago. Several volleys of gunshots rang out as police in riot gear tried to disperse demonstrators blocking traffic and smashing storefront windows along a street that was a flashpoint of last year's unrest in the St. Louis suburb after Michael Brown, 18, was slain. Police later said the gunfire began with two groups of agitators apparently shooting at each other.
http://news.yahoo.com/ferguson-protests-mostly-peaceful-anniversary-brown-shooting-015555407.html
...
Anniversary commemorations had begun hours earlier with a peaceful march through the St. Louis suburb. The scene changed dramatically after dark. Dozens of protesters converged on West Florissant Avenue, which bore the brunt of last summer's rioting, and chanted: "Shut it down" in the midst of a severe thunderstorm.
(Score: 2) by tangomargarine on Monday August 10 2015, @09:53PM
You can't "massacre" a single person. You just call it killing them.
noun
noun: massacre; plural noun: massacres
1.
an indiscriminate and brutal slaughter of people.
verb
verb: massacre; 3rd person present: massacres; past tense: massacred; past participle: massacred; gerund or present participle: massacring
1.
deliberately and violently kill (a large number of people).
Kind of in a similar way to how saying a soldier in a war is murdering the enemy isn't accurate.
"Is that really true?" "I just spent the last hour telling you to think for yourself! Didn't you hear anything I said?"