Cambridge United and their manager Mark Bonner have criticised fans of the League Two (fourth-tier) club who booed as players took a knee as part of English football's anti-racism stance before their home game against Colchester United on Tuesday.
Players in English football have been taking a knee since July, and while the gesture is closely associated with the 'Black Lives Matter' movement the Premier League and Football League have now linked it to their own anti-racism campaigns.
Other spectators in the stadium responded by trying to drown out the boos with applause.
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Cambridge United released a statement on Wednesday morning condemning the behaviour of a section of their fans in attendance.
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Bonner said he was disgusted by the act of a small minority who had embarrassed themselves and the club.
"It shines a light on our club for all the wrong reasons," Bonner told reporters after Cambridge's 2-1 victory.
"What was a really good night for us on the pitch was overshadowed by a real small minority that decide to boo in a moment when we're reflecting the values that everyone at our club believes in.
"It's just behaviour that's unacceptable in our club. We don't want that at all.
What's most encouraging is the vast majority drowned them out quite quickly with an applause and reflected the values of our club much better.
Tuesday's incident comes after Millwall fans booed players taking a knee ahead of their second-tier game against Derby County at The Den stadium earlier this month.
Millwall supporters rejected criticism that their booing of the gesture was racist in nature and said it was a protest against the 'BLM' movement's political stance.
Additional reporting from Reuters.
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