Flowers lay on the ground outside the First Congregational Church near the American Civic... 
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A string of shootings in the U.S. in the last month alone has claimed the lives of 53 people:
—MARCH 10, SAMSON, Ala. — A gunman kills 10 people and commits suicide in a rampage that spanned two dozen miles across the southern Alabama countryside. Police say Michael McLendon had struggled to keep a job and left behind lists of employers and co-workers he believed had wronged him.
—MARCH 22, OAKLAND, Calif. — A man pulled over in a routine traffic stop fatally shoots two officers and then kills two more in a gunfight in which the suspect was also killed. Relatives say Lovelle Mixon, 26, had been frustrated about not finding work and feared returning to jail.
—MARCH 29, SANTA CLARA, Calif. — A man shoots and kills his two children and three other relatives, then kills himself at a family housewarming party in an upscale neighborhood. Investigators don't yet know the motive of Devan Kalathat, a 42-year-old engineer at Yahoo.
—MARCH 29, CARTHAGE, N.C. — A man opens fire in a nursing home and kills seven elderly residents and a nurse who cared for them. Investigators say Robert Stewart, 45, apparently had targeted an estranged wife, a nurse's assistant who escaped by hiding in a bathroom.
—APRIL 3, BINGHAMTON, N.Y. — A gunman bursts into an immigrant center and kills 13 people before killing himself. Police say Jiverly Wong, a 41-year-old Vietnamese immigrant, was apparently upset about losing his job and about people picking on him for his limited English.
—APRIL 4, PITTSBURGH — A gunman wearing a bulletproof vest opens fire on officers responding to a domestic disturbance call, killing three of them. Police say Richard Poplawski, 23, had been upset about losing his job and feared the Obama administration was poised to ban guns.
—APRIL 4, GRAHAM, Wash. — A man fatally shoots his five children in their mobile home and then takes his own life in his car miles away. Relatives identified the father as James Harrison. A motive was not yet known.
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