Facebook liberal
A gullible person with liberal views who constantly cries wolf and believes the sky is falling because they believe every liberal Facebook post and who shares fake news stories without thinking for a second whether or not they are true.
Ha Ha. This Facebook Liberal is sharing more fake news in her feed and whipping herself into another frenzy.
Facebook liberal
n. someone who expresses constant online outrage in support of various progressive causes but provides no genuine, substantive advocacy
He's such a Facebook liberal; his wall posts are full of links to Huff Post and Amnesty Intl, but he hasn't voted in ten years.