One hundred fifty <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Palestinian_people" id="mwATU" rel="mw:WikiLink" title="Palestinian people">Palestinians</a> in <a href="https://en.wikipedia.org/wiki/Beirut" id="mwATY" rel="mw:WikiLink" title="Beirut">Beirut</a> are <a href="https://en.wikipedia.org/wiki/Tel_al-Zaatar_massacre" id="mwATc" rel="mw:WikiLink" title="Tel al-Zaatar massacre">killed</a> in a <a href="https://en.wikipedia.org/wiki/List_of_terrorist_incidents" id="mwATg" rel="mw:WikiLink" title="List of terrorist incidents">terrorist attack</a> during the <a href="https://en.wikipedia.org/wiki/Lebanese_Civil_War#Second_phase_of_the_war,_1977-82" id="mwATk" rel="mw:WikiLink" title="Lebanese Civil War">second phase</a> of the <a href="https://en.wikipedia.org/wiki/Lebanese_Civil_War" id="mwATo" rel="mw:WikiLink" title="Lebanese Civil War">Lebanese Civil War</a>.