The president has issued a statement condemning the killing of two New York police officers, and asking people to reject violence.
Detractors blamed the civil rights leader for inciting an anti-policy mentality. Sharpton denounced the shootings and offered condolences.
Brinsley shot his girlfriend in Maryland before heading to Brooklyn, cops say.
It was unclear how China would respond to a U.S. request that it take action against Pyongyang's cyber mischief.
In a televised speech, Raul Castro pledged that renewal of U.S. relations would not end communism in Cuba.
Retail analysts say the last Saturday before Christmas could trump "Black Friday" as the biggest retail-generating day of 2014.
There's a reportedly growing discontent among jihadists who left their home countries to fight for ISIS, but the group won't let them leave.