Veteran rocker Neil Young, who recently became a US citizen, has ripped into Donald Trump like a hurricane in an open letter in which he calls the president "a disgrace to my country" and endorses Democratic Party hopeful Bernie Sanders.

74-year-old Young has already slammed Trump for using his anthem Rockin' in the Free World at his rallies but the singer has gone full on in the lengthy tirade, which was posted on the front page of the Neil Young Archives site in a section he calls "the NYA Times-Contrarian".

Donald Trump

Well known environmental campaigner Young begins his blistering broadside with, "You are a disgrace to my country," and continues "Your mindless destruction of our shared natural resources, our environment and our relationships with friends around the world is unforgivable."

He also compares Trump to Barack Obama, writing, "Our first black president was a better man than you are" and slates Trump again for using Young’s music.

"Keep on Rockin’ in the Free World is not a song you can trot out at one of your rallies. Perhaps you could have been a bass player and played in a rock and roll band. That way you could be on stage at a rally every night in front of your fans, if you were any good, and you might be…"

Young is one of many artists who have slammed Trump for using their music at his rallies 

Young, who released his new album Colorado late last year, adds, "Every time Keep on Rockin’ in the Free World or one of my songs is played at your rallies, I hope you hear my voice. Remember it is the voice of a tax-paying U.S. citizen who does not support you. Me."

Young also says he has no beef with Trump voters, saying that "although they have been lied to, and in many cases believed the lies, they are true Americans. I have their back."

Young's letter to Trump in full:

"You are a disgrace to my country. Bragging about the U.S. economy does not disguise the fact that the numbers today are what you inherited almost four years ago.

Your mindless destruction of our shared natural resources, our environment and our relationships with friends around the world is unforgivable.

Your policies, decisions and short-term thinking continue to exacerbate the Climate Crisis.

Our first black president was a better man than you are.

The United States of America, my country, is not a green on one of your branded golf courses that you can ride around on and damage so that other players cannot shoot straight.

Keep on Rockin’ in the Free World is not a song you can trot out at one of your rallies. Perhaps you could have been a bass player and played in a rock and roll band. That way you could be on stage at a rally every night in front of your fans, if you were any good, and you might be…

Every time Keep on Rockin’ in the Free World or one of my songs is played at your rallies, I hope you hear my voice. Remember it is the voice of a tax-paying U.S. citizen who does not support you. Me.

I don’t blame the people who voted for you. I support their right to express themselves, although they have been lied to, and in many cases believed the lies, they are true Americans. I have their back.

U.S. justice is ours - not yours..

One of your opponents has answers I like. He is aiming at preserving our children’s future directly. He is not popular with the Democratic establishment because unlike all the other candidates, he is not pandering to the industries accelerating Earth’s Climate Disaster, the end of the world as we know it. He is truly fighting for the USA.

His initials are BS. Not his policies.

We are going to vote you out and Make America Great Again."

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