In summary, who cares of Trump is POTUS, he'll be just another show piece without real control in a much more complex game of power dynamics.
That said, if someone wants to filter trumpology, they can ignore or flag them in their personal SPAM filter and statistics will do the rest. If that doesn't work, I'm sure you can silence certain Facebook profiles for you personally, just like one doesn't attend certain social circles in the real life.
If anything I'd be more concerned about Hillary, since she is perceived as the good one, but she has ulterior motives, in part of course due to campaign money. In any case, she's not an example of a female leader who looks for peace and happiness, like some female presidents have claimed all females power figures to be in contrast to male leaders.
To bring it back to social media, I think Facebook conversations are especially poor in quality and a way to politely disagree would be good for the site and, as facebook grows, good for discourse generally.