Green's threat to boycott also comes as Alton H. Maddox, a well known advocate for the black community, has accused officials at Sirius XM (SIRI) of operating a "criminal enterprise" and has demanded meetings.

Here is Green's letter:

JUST A NOTE TO LET YOU GUYS KNOW THAT I WILL NOT BE RENEWING MY SUBSCRIPTION TO SIRIUS XM RADIO (SIRI) FOR THE FOLLOWING REASON: YOU GUYS ARE TRYING TO SHUTDOWN BLACK TALK RADIO.

FIRST GW ON THE HILL NOW YOU REPLACE ROB REDDING'S REDDING NEWS REVIEW WITH A COOKING SHOW? THEN YOU CHANGE FROM "THE POWER" TO SOMETHING CALLED THE "URBAN VIEW".

I WOULD LIKE TO KNOW WHY YOU AT SIRIUS ARE SO AFRAID OF BLACK EMPOWERMENT?

YOUR STAFF ARE OUT OF TOUCH WITH THE BLACK COMMUNITY.

I'M TELLING YOU WE HAVE ALREADY STARTED ORGANIZING OUR FRIENDS TO CANCEL THEIR SIRIUS XM RADIO BECAUSE OF THIS.

WE WILL NOT STAND BY WHILE YOU SILENCE ALL OF THE BLACK POLITICAL TALK RADIO THAT MATTERS. I GUESS YOU WILL BE GETTING RID OF JOE MADISON NEXT.

WE THE BLACK COMMUNITY WILL VOTE WITH OUR DOLLARS. THE REASON I HAVE XM RADIO WAS SO I COULD HEAR THE POWER. IF THERE IS NO POWER, THEN THERE IS NO NEED FOR SIRIUS XM RADIO.

I'M CALLING ON ALL AFRICAN AMERICANS TO STAND WITH US TO BOYCOTT SIRIUS XM UNTIL THEY BRING BACK THE POWER

1. ROB REDDING'S REDDING NEWS REVIEW

2. GW ON THE HILL

(BY THE WAY BOTH OF THESE SHOWS REALLY SHOULD HAVE MORE TIME ANYWAY).

PLEASE UNDERSTAND THAT MANY OF US IN THE BLACK COMMUNITY ARE VERY UPSET OVER THIS CHANGE.

THE FACT THAT YOU HAVE MADE THIS DECISION TO REMOVE THE POWER FROM YOUR PROGRAMMING SHOWS YOU HAVE NO RESPECT FOR YOUR BLACK CUSTOMERS OR THE BLACK COMMUNITY.