There were the selfie-happy Democrats singing "We Shall Overcome" while demanding passage of a bill that those right-wing nutjobs over at the American Civil Liberties Union have "strongly" argued would undermine civil liberties.
(source: "Democrats: We Will Overcome the Constitution"@Reason.com)
For those who don't know the context, a group of Democratic lawmakers in US House of Representatives staged a "sit-in", to protest failure to pass gun control bills as a response to Orlando, FL shooting.
The "demanding passage" part of a claim is pretty obvious (if not 100% accurate, the bills weren't even brought to vote because they failed in the Senate), but the assertion that ACLU argued that the proposed bills that failed to pass "would undermine civil liberties" is something unexpected.
 the "right-wing nightejobs" part of the claim is meant as an irony.. ACLU (American Civil Liberties Union) is generally viewed to be more liberal than conservative and doesn't exactly have a reputation of strong Second Amendment support, compared to many other liberties