Optimism, some emotion and a call for Americans to reject discrimination and welcome opposing views, that was the tenor of President Obama's speech Tuesday night in Chicago, his final address as commander-in-chief.>> Democracy can buckle when it gives in to fear.>> Obama urging citizens of all backgrounds to defend American principles and warning of policies that seek to make the US less inclusive, a subtle dig at incoming president Donald Trump.
>> We must guard against a weakening of the values that make us who we are. That's why I reject discrimination against Muslim-Americans.>>
>> Reuters' correspondent Renita Young covered the farewell address at McCormick Place.>> It was definitely a crowd of mixed emotions. At some times people cheered, and at other times I actually saw people crying. But President Barack Obama ended this speech and his Presidency with the very same message of hope that he started it with years ago.
>> We have to pay attention.>> While Obama said he was hopeful about the next generation of Americans, he also implored young people to listen to each other's different points of view.>> Increasingly, we become so secure in our bubbles that we start accepting only information, whether it's true or not that fits our opinions, instead of basing our opinions on the evidence that is out there.
>> Sporadic chants of four more years broke out throughout the evening and during Obama's speech.>>