Starship Troopers (1959) by Robert A. Heinlein

I refuse the fact that we should not care about the Hindus of Pakistan since they are Pakistani citizens. Irrespective of citizenship of Pakistan’s Hindus, it is our duty to protect them like we protect Indian Muslims and Hindus.

[I]n a free society each individual has a responsibility towards the beliefs of his society—a responsibility on which all the rights and duties of citizenship are founded.

[Belafonte]'d take me to perform for Martin Luther King's cause. But when they were marching I did not take part, because I was not a citizen