(AP) — The search for courtroom justice has ended in the 1964 "Freedom Summer" killings of three civil rights workers in Mississippi's Neshoba County, but more than a half century after they died some Mississippians and the relatives of the slain men say the search for another kind of justice still is still ongoing. Mississippi Attorney General Jim Hood announced last week there's no longer any way to gather enough evidence to charge any remaining suspects in the slayings of James Chaney, Andrew Goodman and Michael Schwerner. After an FBI investigation, eight people were convicted in 1967 of federal civil rights violations related to the killings. The final prosecution came in 2005, when Hood and the Neshoba County district attorney won three manslaughter convictions against white supremacist Edgar Ray Killen. Goodman says the tension between civic ideals and the racism that led to his brother's murder remains present in American life. A state where blacks once faced violence for trying to vote now has hundreds of black elected officials. The group has worked with people in Philadelphia and elsewhere to examine histories of anti-black violence. [...] a museum devoted to the civil rights struggle is supposed to open next year, adjacent to a broader state history museum.