<a href="https://en.wikipedia.org/wiki/Independence_movement_in_Puerto_Rico" id="mwARY" rel="mw:WikiLink" title="Independence movement in Puerto Rico">Armed Puerto Rican nationalists</a> attack the <a href="https://en.wikipedia.org/wiki/United_States_Capitol" id="mwARc" rel="mw:WikiLink" title="United States Capitol">United States Capitol</a> building, <a href="https://en.wikipedia.org/wiki/1954_United_States_Capitol_shooting" id="mwARg" rel="mw:WikiLink" title="1954 United States Capitol shooting">injuring five Representatives</a>.