One specific line is being called one of the worst from the entire MCU and unfortunately for Anthony Mackie, it's from Falcon and the Winter Soldier.
Racist Captain America
Hypocrisy can often be unavoidable when projects are made. This is especially true when it comes to the MCU, which is known for having some extremely complicated and confusing plotlines that can span years. Anthony Mackie's The Falcon and the Winter Soldier was loved for several reasons. The series was fairly grounded in comparison to the cosmic threats of Loki and WandaVision.
Despite this, it managed to answer two of the franchise's most important questions; What will happen to Captain America and the Winter Soldier? Even though fans got the answers they wanted and understood the fates of these two characters and titles, that doesn't mean the show was a perfect piece of Marvel media.
There is a distinct scene from the series finale that went against everything the show tried to establish in the rest of its episodes. Fans have taken note and they can't help but call it one of the worst lines from the entire franchise.