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Trump protesters gather outside arena: "Organizers weren't going to let this opportunity go by."
Trump: 'We have an incompetent president'
Presidential candidate Donald Trump slams Karl Rove and President Obama while speaking at a campaign event in Dallas.
Police question man in Phoenix I-10 shootings
There have been at least 11 confirmed shootings on a busy stretch of Interstate 10 in downtown Phoenix. CNN's Sara Sidner reports.
Donald Trump under attack going into debate
With Donald Trump center stage at the CNN Debate, will his rivals double down on their latest attacks? Sunlen Serfaty reports.
Former 'Apprentice' contestant defends Trump
Katrina Campins, former "Apprentice" contestant, conservative radio host Ben Ferguson and CNN political commentator S.E. Cupp discuss Republican presidential candidate Donald Trump's