Cleveland (CNN)Donald Trump said Monday he believes the Black Lives Matter movement has in some cases helped instigate the recent killings of police officers, and suggested he might direct his future attorney general to investigate the civil rights activist group.

“Certainly, in certain instances they are,” Trump told Fox News host Bill O’Reilly when he asked whether the group has been “a fuse-lighter in the assassinations of these police officers.”
    “They certainly have ignited people and you see that … It’s a very, very serious situation and we just can’t let it happen,” Trump said.
    Trump also called the group a “threat” and accused the group of “essentially calling death to the police,” apparently referring to a 2014 video of protesters in New York City who chanted, “What do we want? Dead cops.”


    Trump also addressed Ohio Gov. John Kasich’s apparent decision not to appear at the GOP convention, saying that the governor signed a pledge during the primaries to support the GOP nominee and should show up regardless as the governor of the convention’s host state.
    “Look, I beat him very badly,” Trump said. “If I were him and gotten beaten that badly, I probably wouldn’t show up either. He has a problem though. He signed the pledge. And from a standpoint of honor, I think he should show up.”
    But, perhaps in the convention’s spirit of GOP unity, Trump declined to call Kasich a sore loser.
    “Well, I don’t want to say that,” Trump demurred.

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    Trump: Black Lives Matter has helped instigate police killings