Joining Crowell were Duke Johnson Jr. and Terrence Magee, Jabrill Peppers and Calvin Pryor, cornerback Jamar Taylor, Kenny Britt, Ricardo Louis, Kirksey, Jamie Collins and Brandon Wilds.
Also included in the gathering was Seth DeValve, who became the first known white player to kneel for the national anthem since the peaceful protests were made prominent last season by quarterback Colin Kaepernick to bring awareness to racial injustices in America.
The act came just days after Browns head coach Hue Jackson said he supported his players right to protest, provided he be notified first.
“There’s a lot of racial and social injustices in the world that are going on right now,” rookie safety Jabrill Peppers told the press after the game. “We just decided to take a knee and pray for the people who have been affected and just pray for the world in general.”