Lord Jamar is very outspoken on white rappers, namely Eminem. 

In the past, the Brand Nubian member said Em has benefited from his skin color both in and out of Hip Hop and has criticized Royce Da 5'9" for being so loyal to him.  Jamar and Royce even had a Twitter debate in 2015 about white rappers, which was civil.  But now Royce has said a few harsh words about Jamar, who seems to live on Vlad TV.

"All this whole Lord Jamar shit and all these niggas, calling me all these names 'cause I'm holding my dog down, I don't worry about it, it's cool, it's alright, because I know none of these niggas will say none of that shit to my face, because that would be the very moment they lose their teeth," said Royce in a web video.

Earlier, Royce said he'll always stick up for Em, whether it bothers people or not. The PRhyme rapper also said he likes Eminem's Revival album, which has gotten some not so good reviews.

"I don't like when anyone says anything about Marshall. Am I going to stop being that way? No" he said. "That's my dog I'm always going to support him. Do I like Revival? Yes. I like it and I think it's fucking great and I listen to it all the time. Suck my balls if you disagree. That's just Royce."

Why do you think Jamar has a problem with Em and other white rappers? You can see Royce's comments about Jamar below at the 2:10 mark.