First off, the whole stadium wasn't booing. It was a large amount, but clearly it's not a herd like mentality if you have groups of supporters applauding Costa and Fabregas as they went off. Or did you miss that? Secondly, the fans at the stadium absolutely have a "true opinion." They've been watching this shit all season and have been brilliant, they have the right to blow off some steam. As FB said earlier they aren't robots.