Video from outside of Donald TrumpDonald TrumpOvernight Energy: Trump set to sign offshore drilling order Bush ethics lawyer: Trump should strip Flynn of military title Dems might begin again with Kamala Harris and California 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.