I used to be into the blues in my student days. Hooker was the real deal and almost all the old guys are gone now. Others keep the flame alive. It was some of the British bands who helped make blues popular, but then the US had more issues with race and music was quite segregated. That seems so strange now, but those attitudes may still linger.
The Blues Brothers is one of my favourite films. You can tell the people involved loved the music. That scene with the street market feels authentic and I assume they just filmed what was going on anyway.
I still love the blues as it was so influential! Although I dont listen to modern blues much just the Ogs!