Facebook has been selling information about journalists to governments who intend to assassinate said journalists? Do you have a source for that claim?
Facebook has been giving out information for free, about all people, including anyone the US intends to assassinate, to the US government.
Whether the US government was actually intending to assassinate any of Facebook's users - I have no idea; I don't have access to the assassination lists the president signs.
Otherwise equating the two is ridiculous.