@Finn dAbuzz,
I need to qualify my statement and in doing so provide a better understanding of the holding in Citizens United v. FEC.
I begin with perhaps a very important phrase from Scalia's concurrence. "The dissent says that when the Framers “constitutionalized the right to free speech in the First Amendment , it was the free speech of individual Americans that they had in mind.” Post, at 37. That is no doubt true. All the provisions of the Bill of Rights set forth the rights of individual men and women—not, for example, of trees or polar bears."
In other words, animals cannot "speak" for purposes of the 1st Amendment, and neither can trees, exactly and precisely because the 1st Amendment Free Speech Clause was not conceived to protect them, not individually or collectively. 1st Amendment free speech rights can best be understood as protecting the individual speech of a person, and collective speech of people, irrespective of the fact the collective speech is done through the medium of a non-human entity, such as a corporation, school, college, university, church, etcetera. So there is a human component to it, when considering the 1st Amendment is not applicable to polar bears and trees.
However, as it pertains to people, to human beings, the text of the 1st Amendment makes no distinction between individual speech or collective speech of people, or the speech of people through and by a corporation, or the speech of a single person. When referring to speech, we are of course talking about some human component, but the 1st Amendment Speech Clause makes no distinction between this human component expressed individually, collectively, or collectively and/or through and by a human created entity.