Politicians very rarely concede that they might have to sacrifice one aim in order to achieve another, but perhaps in reality they do. Take law and order versus individual liberty,for instance.Could our streets not be made safer by limiting individual liberty-for instance by giving the police greater powers to arrest people they suspected were about to engage in criminal act ? if so, which value should have the higher priority? of course in order to decide that, she would need to say a bit more precisely what individual liberty means.