Ken Langone on social media crackdown of rhetoric that incites violence

"Free speech is a critical part of this country of ours," Ken Langone, chairman of Invemed Associates and a founder of Home Depot, told CNBC's "Squawk Box" Wednesday. "Twitter was used to motivate people to do bad things; I got a problem with saying they shouldn't shut it down… This is an issue that has to be thoughtfully addressed over a period of time."