Rock and roll superstar Kid Rock had a very blunt and simple message for San Francisco 49ers quarterback Colin Kaepernick.

“Fuck Colin Kaepernick!” shouted to the crowd at Fenway Park late Saturday night during his concert as he sang his hit song “Born Free.” (RELATED: Hookstead’s Hot Take: America Stood Up For Colin Kaepernick, He Should Stand For The Flag)

WATCH (starts at 53 seconds):

Kaepernick has been the subject of intense scrutiny since he decided to sit during the national anthem. The once electric dual-threat quarterback claimed he sat during the anthem because minorities are oppressed in America. (RELATED: Millionaire NFL Quarterback Has Mind-Boggling Reason For Refusal To Stand For National Anthem)

The 49ers quarterback lost his starting job and spends the game on the bench, just like when he’s protesting the anthem.

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