Walker, the president of Young America's Foundation, said the organization would review security measures.

Walker said he hopes campuses continue welcoming conservative speakers and provide adequate security.

Walker knew Charlie Kirk personally from his connections to Wisconsin politics.

Both Democratic and Republican politicians in Wisconsin condemned political violence after Kirk was shot and killed.

Former Wisconsin Gov. Scott Walker, now the president of Young America's Foundation , said his youth conservative organization will review security at its events but won't stop holding them on college campuses.

Backing down would mean "this assassin would win," Walker said in a Sept. 14 interview on "Upfront," WISN-TV's Sunday politics show . "The best way to honor Charlie (Kirk's)

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