The Joker commits what may be his most heinous act in BATMAN: THE KILLING JOKE. <a href="/hashtag/skwad?refid=13&__tn__=%2Cg"> <span > #</span><span >Skwad</span></a> <a href="https://bit.ly/18HS76J" target="_blank" rel="noopener"> <span> http://bit.ly/</span><wbr /><span ></span>18HS76J</a>