Peace & Justice History for 9/10:

September 10, 1897
Nineteen unarmed striking coal miners were killed and 36 more wounded in Lattimer (near Hazleton), Pennsylvania, for refusing to disperse, by a posse organized by the Luzerne County sheriff. The strikers, most of whom were shot in the back, were originally brought in as strike-breakers, but later created their own union. The background and details 
September 10, 1963
Twenty black students entered public schools in Birmingham, Tuskegee and Mobile, Alabama. The Governor George C. Wallace had ordered Alabama state troopers to stop the federal court-ordered integration of Alabama’s elementary and high schools. President John Kennedy responded by calling out the Alabama National Guard to protect the students and to see the order enforced.
President Kennedy spoke that day at American University’s commencement, saying, 
“Peace need not be impractical, war not inevitable . . . There is not peace in many of our cities because there is not freedom.”
September 10, 1996
 
Sheryl Crow’s second album was banned from Wal-Mart stores because the song she co-wrote with Tad Wadhams, “Love Is A Good Thing” opens with
“Watch out sister, watch out brother,
Watch our children while they kill each other
With a gun they bought at Wal-Mart discount stores….”

Read more about this event   and an update

https://www.peacebuttons.info/E-News/peacehistoryseptember.htm#september10

Peace and justice history 7/29

https://www.peacebuttons.info/E-News/peacehistoryjuly.htm#july291970

July 29, 1970
After a five-year strike, the United Farm Workers (UFW) signed a contract with the table grape growers in California, ending the first grape boycott.
Signing the contract

Exploring the United Farm Workers’ History https://ufw.org/research/history/ufw-history/
July 29, 1972
The U.S. Supreme Court ruled the death penalty to be cruel and unusual punishment by a 5-4 vote. The Court called the wide discretion in application of capital punishment, including the appearance of racial bias against black defendants, “arbitrary and capricious” and thus in violation of due process guarantees in the 14th Amendment
[see July 28, 1868].
Influence of race on imposition of the death penalty https://dpic-cdn.org/production/documents/pdf/FactSheet.pdf