The injustice and violation of principle are not less flagrant because those who suffer by them are a minority, for there is not equal suffrage where every single individual does not count for as much as any other single individual in the community. But it is not only a minority who suffer.
 John Stuart Mill, Considerations on Representative Government (1861). copy citation

Context

“there is a part whose fair and equal share of influence in the representation is withheld from them, contrary to all just government, but, above all, contrary to the principle of democracy, which professes equality as its very root and foundation. The injustice and violation of principle are not less flagrant because those who suffer by them are a minority, for there is not equal suffrage where every single individual does not count for as much as any other single individual in the community. But it is not only a minority who suffer. Democracy, thus constituted, does not even attain its ostensible object, that of giving the powers of government in all cases to the numerical majority. It does something very different; it gives them to a majority of the majority, who may be, and often are, but a minority of the whole.” source