This might seem early or a stretch but considering that the war on drugs, targeting communities of color, started in 1971 I don't find it implausible. This line does so many things at once. I mean not only does it characterize an area specifically for black people as bad, poverty and depravity stricken, through just the simple word "dragging" but it also implies that the negro streets were the only streets that would have the "angry fix". Angry fix being substances to abuse; drugs, alcohol, etc. Knowing that Allen Ginsberg wrote this while in California also makes my thoughts feel like less of a stretch.
I believe that this "angry fix" and the idea that it can only be found within the "negro streets" is one that follows what was a conspiracy theory behind the war on drugs and substance abuse within communities of color. A lot of Black Americans at this time had the belief that the government or CIA was flooding black streets with drugs as a way to further push criminalization and surveillance of Black Communities. They mainly believed it was to destroy the Black Community and the Black Family Unit. This idea was even further theorized by National Security Archives senior analyst Peter Kornbluh’s bold interview where he claimed that the U.S. government is chiefly to blame for crack’s ubiquity. Even though the conspiracy is still widely denied by all agencies. This line to me feels like Ginsberg along with other black Americans were first starting to come to this conspiracy. Being that I am a criminal justice major I can't help but see the connections to this theory within the subtext of the words.