A democracy cannot function effectively when its constituent members believe laws are being bought and sold. - John Paul Stevens

A well regulated militia, being necessary to the security of a free state, the right of the people to keep and bear arms when serving in the militia shall not be infringed.

All general business corporation statues appear to date from well after 1800.. The Framers thus took it as a given that corporations could be comprehensively regulated in the service of the public welfare. Unlike our colleagues, they had little trouble distinguishing corporations from human beings, and when they constitutionalized the right to free speech in the First Amendment, it was the free speech of individual Americans they had in mind.
The fact that corporations are different from human beings might seem to need no elaboration, except that the majority opinion almost completely elides it…. Unlike natural persons, corporations have ‘limited liability’ for their owners and managers, ‘perpetual life,’ separation of ownership and control, ‘and favorable treatment of the accumulation of assets….’ Unlike voters in U.S. elections, corporations may be foreign controlled.
...It might be added that corporations have no consciences, no beliefs, no feelings, no thoughts, no desires. Corporations help structure and facilitate the activities of human beings, to be sure, and their ‘personhood’ often serves as a useful legal fiction. But they are not themselves members of ‘We the People’ by whom and for whom our Constitution was established.

At bottom, the court's opinion is thus a rejection of the common sense of the American people, who have recognized a need to prevent corporations from undermining self-government since the founding, and who have fought against the distinctive corrupting potential of corporate electioneering since the days of Theodore Roosevelt. It is a strange time to repudiate that common sense. While American democracy is imperfect, few outside the majority of this court would have thought its flaws included a dearth of corporate money in politics.