<a href="https://en.wikipedia.org/wiki/Sandy_Hook_Elementary_School_shooting" id="mwAW8" rel="mw:WikiLink" title="Sandy Hook Elementary School shooting">Sandy Hook Elementary School shooting</a>: Twenty-eight people, including the gunman, are killed in <a href="https://en.wikipedia.org/wiki/Sandy_Hook,_Connecticut" id="mwAXA" rel="mw:WikiLink" title="Sandy Hook, Connecticut">Sandy Hook, Connecticut</a>.