The rap titan dropped his highly anticipated album DAMN. on Friday, and had fans foaming at the mouth just a few hours after its release.
The whole spat started after Rivera was offended by Kendrick's controversial performance, and exclaimed that "hip-hop has done more damage to young African-American men" than racism has.
The album features U2 and Rihanna with additional credits from BadBadNotGood, Mike WiLL Made-It, Sounwave, the Alchemist, 9th Wonder, and more.
After Rivera called Lamar "irresponsible" after his 2015 BET Awards performance where the rapper stood on top of a police auto and broke free of chains, Lamar rapped about Rivera on his new album which dropped on Thursday.
He also believes the tracks on the forthcoming album will compliment tracks on Damn.
Knicks exec Jackson says Anthony better off elsewhere
The Knicks seem to be pushing Anthony to waive his no-trade clause by presenting a better option to chase a title. Anthony holds a no-trade clause, meaning he can approve or shoot down any potential trades.
Speaking on TMZ Live in 2015, Lamar hit back at the conservative news anchor saying: "How can you take a song that's about hope and turn it into hatred?"
I also automatically assume a celebrity is dead when I see the name trending on Twitter, and it probably would be jarring to see my own last name on the top of the trending list. In the video, he calls the lyric "benign" and says the repeated use of lyrics that establish an "us against them mentality" between minority youth and police offers is "the worst role-model".
"The song I did for him came from this acoustic session that was recorded on my iPhone. I get that this stuff is popular, but it avoids the central reality, just as Black Lives Matter avoids the central reality", the 73-year-old continued.
He closed by singing Marvin Gaye's "What's Going On" and asking viewers to "remember Mavin Gaye, not the Notorious B.I.G. and Tupac and all the rest".