Would you care to document your claim that there were wholesale lynchings of blacks going on in the 1960's American South? Sound like you are conducting a wholsale lynching of the American South!
DYODR.
I don't know of any public lynchings, in the real sense of the term, in the 60's South. Their heyday was from 1900 to the 40's, gradually diminishing with each decade.
The term has sometimes, inaccurately, been used when whites murdered blacks and got away with it due to public and law enforcement attitudes favoring their actions.