It's worth remembering that Facebook did share data in violation of their own terms of use with the Clinton came - in fact, that policy came about because Obama "abused" Facebook to collect contact information for friends of people who liked or followed his campaign. Despite this policy change, Facebook allowed Clinton to do the same. They claimed it was by mistake, but even after the mistake was revealed, they didn't change it or cut off Clinton. Clinton's campaign manager speculated it was because "they agreed with us", but also thought that the Trump campaign had similar access (so far, no evidence has emerged to that).

Facebook is not a good actor, anyway you look at it. They are selling data to first or second parties, who are using it to damage our country.