Well maybe they didn't have to kill him, especially the kids. If you look a the the French revolution they also killed the whole family, but it didn't stop them to have monarchy again during Restoration. Where there's a will there is a way, so they found King's cousin and made him a king, but then he ran away when Napoleon showed up and so on.
But yeah I guess you have to kill the king because there will be enough of his supporters, but maybe they could just dethrone him, like Chinese did with Puyi, and let him live like common folk.
But yeah I guess you have to kill the king because there will be enough of his supporters, but maybe they could just dethrone him, like Chinese did with Puyi, and let him live like common folk.
teachings of the Bible are so muddled and self-contradictory that it was possible for Christians to happily burn heretics alive for five long centuries. It was even possible for the most venerated patriarchs of the Church, like St. Augustine and St. Thomas Aquinas, to conclude that heretics should be tortured (Augustine) or killed outright (Aquinas). Martin Luther and John Calvin advocated the wholesale murder of heretics, apostates, Jews, and witches. - Sam Harris, "Letter To A Christian Nation"