At the moment i agree and disagree, because every one has a right to share their views, and small things like a badge on the person is no big deal.Its just sharing their opinion.Again everyone has a right to share their opinion and everyone is entitled to their view.
On the other hand other team players might not be so fond of other sharing their view being that they disagree leading to players giving up (stop playing for their team by standing still in most cases). FIFA usually disagrees with politics and sports mixing as sports is suppose to bring people closer and the main priority to have good sportsmanship.
It could make others in the team that agree support each other more or they could let down the rest of the team. It really depends on people and their ideas of politics.