Anchored by Jake Tapper, The Lead airs at 4 p.m. ET on CNN.
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(CNN) – St. Louis police shot and killed a young African-American man Tuesday after authorities say he brandished a knife.
But did officers follow protocol? Why did they fire nine shots? Why didn't they use tasers? Was there some other way to defuse the situation other than killing him?
CNN's Jake Tapper poses these questions, and more, to St. Louis police chief Sam Dotson in the video above.