But the key is that there's a tangible difference between the immediate physical harm of shouting "fire!" in a crowded theater and the more abstract and amorphous harm of unlimited campaign spending, and the First Amendment bias is that we protect speech, and only carve out narrow exceptions for the most egregious situations.
It's like the question of who has rights... does everyone have full rights by default, and we only take them away in narrow and exceptional cases (like taking Second Amendment rights away from felons), or do we look at people on a case-by-case basis and decide whether they're worthy of rights or not? In either case, you end up with some people having rights and some not having rights, but it colors your perspective on where that line should be drawn.
Also, I think the whole Citizens United outcry is insulting to average Americans, acting like they can be easily swayed by advertising dollars. While that can be true, the Cantor primary loss is an interesting counterpoint. I think if as much energy went into finding ways to defeat well-funded candidates without spending comparable amounts of money (as was done with Brat) as went into complaining about Citizens United, we'd all be much better off.
And then there's the "money as speech" canard... I don't have time to debunk that right now, but to me it's another sign that you've been brainwashed by the left-wing media, much as you think conservatives have been brainwashed by Fox. Think for yourself! Don't take the Daily Kos as gospel!