The guarantees in the First Amendment are not the thing itself, they are means to protect the thing itself.
Suppose a tyranny that is so secure it simply doesn’t care what you say. Tyrants are notoriously thin-skinned and easily offended, but for the sake of theory, pretend that one is not. You can say whatever you like, it doesn’t matter, because the levers of power are so firmly gripped, you have no access to any political power. You have entire freedom of speech, and it means nothing.
Freedom of speech is not the thing itself, use of speech for political gain is the thing itself, and is important *only if *speech can be used to gain power. Political power is the thing itself, and the ability to gain that by public speech on political opinions are what the First protects.
From that, it flows that not just freedom to speak is central, but freedom to be heard. You are entirely free to set up your little soap box and speak your little mind, but if the other guy can roll up a sound truck with rock-concert speakers and sound systems, your freedom of speech is empty, without purpose, it is a check you cannot cash.
The poorest ten percent of our nation can pool its entire wealth and buy ten seconds of Super Bowl airtime, while the chubby and comfortable buy the rest. Does the second group have an unearned political advantage? Clearly. Is that equitable, is it just? No.
Protecting that system of injustice by dire alarms about the threat from alleged Progressive Commissars of the Party is to be so short-sighted, you could walk into a mountain and break your nose.
Will it be difficult and touchy to trim the power of money over our public discourse. Sure. Does that mean it *must not *be done, for fear of staining the First? No.