Idea: compare and contrast foolishly small-minded norms from today & "yesteryear"

Idea: compare and contrast foolishly small-minded norms and realities from the not too distant past with those that are unfortunately present today but not yet seen as such by the ignorant / prejudiced / small-minded. e.g. in 2043 what from today's world will seem as stupid as pre 1960s civil rights segregation seems today? Or, in 2116 what will be considered equally as assinine and unimaginable as not allowing women the right to vote prior to the 1920s? Could be some interesting visual juxtapositions to illustrate the point.