Conservative activist Ben Shapiro breathlessly announced an endorsement Friday of his boycott of Ritz Crackers.

The Breitbart News editor and author called for the boycott because the snack food advertises during the MSNBC program hosted by the Rev. Al Sharpton, who Shapiro chides for referring to white people using the word “cracker” in a 1994 speech.

The boycott drew at least one semi-famous supporter in Robert Zimmerman Jr., brother of the Florida neighborhood watch volunteer acquitted in July of manslaughter in the fatal shooting 2012 of unarmed black teenager Trayvon Martin.

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“There is perhaps no one more undeserving of the title ‘Reverend’ in the world than Al Sharpton,” said Robert Zimmerman, brother of George Zimmerman.

Shapiro hyped the announcement by saying that Robert Zimmerman, who has appeared on cable news programs to suggest the 17-year-old killed by his brother was a drug dealer and had purchased guns illegally, spoke to him exclusively.

“It is clear to me that inciting and promoting racial discord have proven far too profitable vehicles of wealth for Sharpton to abandon on his own but we can force the hand of his sponsors and send a message that he can’t ignore by hurting him where he’s bound to feel it — his wallet,” Robert Zimmerman said.

A petition drive associated with the boycott has drawn just over 8,400 signatures, although it doesn’t demand anything more specific than telling “advertisers to stop backing Al Sharpton.”