It's not hard guys... I know this applies to Public Policy, or should do, if you have any clue about political philosophy, which I doubt many of them do. I would add a lot of Coventry Labour into this bracket as well.
Utilitarianism - Wikipedia
Even then, there are safeguards against the dangers of Utilitarianism, and there are many dangers which political parties and individuals either choose to ignore or just don't know that they are there.
I think this is the problem, so many people talk a good game but a very few actually have any clue on what they are doing.