Your graphs are laughable.
They are also scientifically and mathematically valid. The GSS is the most respected and oldest survey of public attitudes and opinions in the US.
As a white person living in the deep South for 56 years, I can tell you that not a day passes that I don’t personally experience what you claim is virtually unmeasurable.
Ah, yes. Because your anecdotal experiences on a daily basis with .00001% of the US population are enough to refute the statistical measurements of an entire population.
I live in Texas, wear a headscarf and often an abaya, and I don’t have nearly the number of incidents you seem to. Perhaps it’s just your neighborhood.