Samaritanism describes good actions that are often done by people who believe they are genuinely good themselves.
While such behavior is appreciable, due to the way the world works presently, it has become more of an annoyance than a virtue.
People who fall under this description should be called samaritans.
Bob: "John really likes to help out everyone he sees huh..."
Samaritanism in action...
Mark: "He's just competing for the nicest person award. Fucking samaritans."
Someone who suddenly shows faux concern about oneproblem to try to draw attention away from another.
Nigel says we shouldn't take in any foreign refugees while there are British homeless people to look after, but he never cared about the plight of the homeless before. He's such a bloody Shamaritan!