Serious question(s), not trolling. Why shouldn't Facebook take down the ad that's calling for a break up of their Company? How is this any different from a person walking into a store and asking to place an ad inside the store calling for breakup or shutting down of said store? What store owner would ever allow such a thing? Why would (or should) any business allow any sort of propaganda that strikes at the heart of…
For the same reason that TV stations should have to run ads for candidates that advocate for greater taxes on TV stations.
Facebook operates in a stable environment created by the US' democratic governmental structure. In their role as communication channel, they have an obligation to preserve the process that created the environment in which they arose.
I work in tech and while I might quibble with the wording, there's not one point that I feel is wrong on substance. They have bulldozed competition. They have profited from private information. They have tilted the playing field in their favor.
Ironically, I would have thought this last point was the most arguable. Then Facebook took down her ad. ... Sigh. FB so predictably short sighted sometimes.