lizzie borden and her family are buried in fall river , massachusetts .
their plot at oak grove cemetery was defaced with black and green paint .
speculated graffiti is related to lifetime 's the lizzie borden chronicles .
borden was acquitted after going on trial for the two murders in 1892 .
inspired rhyme : ` lizzie borden took an ax and gave her mother 40 whacks '
historic murder house is adjacent to where aaron hernandez is on trial .