The protest was organized in honour of George Floyd and to further seek an end to racial injustice in America and beyond.
Daily Sun reported he sustained injury in a recent training session.
Joshua also wore on a leg brace.
Watch Anthony Joshua as he makes his voice heard during the #BlackLivesMatter protest in Watford below;
Anthony Joshua makes his voice heard at today’s Black Lives Matter protests in Watford. pic.twitter.com/48cJgFxG4x
— Boxing on BT Sport 🥊 (@BTSportBoxing) June 6, 2020
