There's a lot of weird stuff happening on Facebook, and our readers often send us tips and screenshots of strange happenings from their News Feeds. This week, we received an unusual one. It was sent to us in the wake of a Wall Street Journal report about an internal conflict at Facebook over Donald Trump's xenophobic posts on the social network. The tipster sent us a screenshot of a poll from their News Feed that asked, "Are you concerned about America's future if Donald Trump becomes president?"