The <a href="https://en.wikipedia.org/wiki/Birmingham_pub_bombings" id="mwARE" rel="mw:WikiLink" title="Birmingham pub bombings">Birmingham pub bombings</a> kill 21 people. The <a href="https://en.wikipedia.org/wiki/Birmingham_Six" id="mwARI" rel="mw:WikiLink" title="Birmingham Six">Birmingham Six</a> are sentenced to life in prison for the crime but subsequently acquitted.