Sometimes PCs need to do what’s best for the game even though it may not be what’s best for the character. The PC’s personal politics, morals and ethics need to be set aside in order for the campaign to proceed.
An example of this scenario happened to our party in a recent game. Although we chose to do what was best for the game, it seemed really out of character for at least a couple of the PCs in the party. We’ve played these characters for almost a year and during that time we’ve worked to make them feel like unique individuals. They have distinct personalities and mannerisms. So what happens to all that character building when the adventure dictates that the role-playing be shelved during certain circumstances in order to keep the larger story arc moving?