I did not know such overt racism existed in Philadelphia.  By the time we moved to the area, around 1983, it had improved drastically.  It still had a long way to go...... 
We lived about 45 minutes outside of the city.  Of all the places we have lived I found that to be the most prejudice area of all.  Actually it was the only place we lived that was outspoken about their feelings.  When we moved from there I did something I never considered before, I made sure there was a fairly decent Jewish population in the school district.
Attitudes were changing by the time we left & I'm sure they have continued to do so.