Video from outside of Donald Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE's rally in Kansas City, Mo., shows at least five police officers using pepper spray against protesters.

Trump has been under fire this week for the escalating violence between his supporters and anti-Trump protesters.

Kansas City Police reported that they used pepper spray twice at the event.