Chicago police on Tuesday released video footage of a veteran officer allegedly shooting a black teenager.
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“You don’t want to be on the wrong side of Barbara Mikulski,” the president quipped.
"For the mainstream media to go out and say that this didn’t happen is just factually inaccurate."
Obama urged Turkey and Russia to hold talks to avoid a military escalation.
Protests are expected when video of Laquan McDonald's shooting is released.
The 2016 presidential contender has an 83 percent approval rating among voters in his state.
The percentage who describe racism as "a big problem" has surged since 2011.
Russia says the jet never entered Turkish airspace.
Those polled also favor sending American ground troops to fight ISIS.
Trump was on "Saturday Night Live" for a little over 12 minutes.