Some Millwall supporters booed the players taking the knee ahead of their Championship game against Derby County on Saturday.
Fans of the club were returning to The Den for the first time since the outbreak of coronavirus, with 2,000 permitted in for the match versus the Rams due to the area being in Tier 2.
Players and staff of teams from all around the country have been taking the knee for months as a show of support for the Black Lives Matter movement.
But there was a vocal show of disapproval by a significant number of Millwall fans as it happened before them for the first time on Saturday.
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