I stumbled upon a video a while ago, not something I might normally watch, but I did watch it, and I highly recommend it to all of you.
I never listened to his music and I did not know much about him, after watching this interview I was curious so I read through his Wikipedia page
One part caught my eye
In 2011, pursuant to the Freedom of Information Act, the FBI released documents revealing its investigation of the Jewish Defense League for making death threats against Shakur and other rappers.
The sources linked to that are Haaretz.com and the FBI vault
FBI Files on Tupac Shakur Murder Show He Received Death Threats From Jewish Gang https://www.haaretz.com/jewish/1.4999870
The JDL have been extorting money from various rap music stars via death threats," the FBI file on the case states. The report then goes on to describe how the group would make the death threats, and then call the rap star and offer protection for a fee. According to the documents, Shakur was a victim of this scheme, as was another late rapper, Eazy-E. Although the documents refer to the JDL extortion scheme, they don't make a direct connection between the group and the murder of Shakur.