Rio Fights Rampant Street Crime as Tourists Fly In &lt;p&gt;&lt;/p&gt;&lt;p&gt; By Andrei Khalip&lt;/p&gt;&lt;p&gt; RIO DE JANEIRO, Brazil (Reuters) - Police armed with riflesand wearing flak jackets manned checkpoints across Rio deJaneiro on Thursday to prevent muggings and other violence astourists flocked to the ocean city for the holiday season.&lt;/p&gt;