This is not meant as a defense of segregation, but the point of segregation was not about sending a message or "insinuating" that non White people were not "good enough" to use the same facilities as White people. Segregation was simply the result of a misguided political belief system concerning the then purported "incompatibility" of the races to smoothly interact under a common civil umbrella which btw was initially imposed onto the South from the North by way of the new Northern based regimes running the defeated Confederate States during Reconstruction.
ah even I have to agree with the author above, part and parcel of segregation was the majority whites think they are superior, correct me if I am wrong but the KKKers and other racists have used an actual passage in the Bible that implies blacks are inferior to justify treating as such....and certainly blacks had every reason to believe that they were considered inferior by the way they were treated, segregation is not a pretty thing in history, I don't think Canada ever had it in a systematic fashion...
however I don't much buy the argument about Social Security,
if black males stopped killing each other, they would have a greater life expectancy and if you get your income illegally and you aren't making contributions to SS, well hey not my problem you didn't bank some of your ill gotten gains if you are lucky enough to live that long or not end up in prison, getting SS in an indirect fashion........
as Charles Barkley said last night on some cable news show,
we (blacks) have become our own worst enemies and we have to turn this situation around ourselves