Eminem has unleashed a profane lyrical tirade against President Donald Trump - saying he "came to stomp" and taking aim at Trump's Twitter habits, policy, appearance and supporters.

The rapper on Tuesday unveiled The Storm, a 4.5-minute freestyle rap video recorded Friday in a Detroit parking garage that aired as part of BET's Hip Hop Awards on Tuesday night.

Eminem slammed the Republican president as "a kamikaze who will probably cause a nuclear holocaust" before criticising Trump's ongoing campaign against NFL national anthem protests.

"But this is his form of distraction, plus he gets an enormous reaction when he attacks the NFL, so we focus on that instead of talking Puerto Rico or gun reform for Nevada. All these horrible tragedies and he's bored and would rather cause a Twitter storm with the Packers," he rapped.

He later mentioned NFL free agent quarterback Colin Kaepernick, who's credited with launching the ongoing anthem protests. Kaepernick told the rapper on Twitter, "I appreciate you."

Eminem also took down Trump's recently unveiled plan for tax cuts, questioning: "then who's going to pay for his extravagant trips back and forth with his fam to his golf resorts and his mansions?"

At one point he called Trump, who's 71, a "racist 94-year-old grandpa" and compared the president's appearance to the Marvel Comics character The Thing.  

Source: Khaleej Times