<a href="https://en.wikipedia.org/wiki/Niterói_circus_fire" id="mwARo" rel="mw:WikiLink" title="Niterói circus fire">Niterói circus fire</a>: Fire breaks out during a performance by the Gran Circus Norte-Americano in the city of <a href="https://en.wikipedia.org/wiki/Niterói" id="mwARs" rel="mw:WikiLink" title="Niterói">Niterói, Rio de Janeiro</a>, Brazil, killing more than 500.