How did Walter Cronkite's proclaimation that the Vietnam War was unwinnable affect politics?

It did not.
Images like the footage of Nguyen Ngoc Loan, which never would have made it past the censorship of the World War II era, were widely broadcast.
President Lyndon B. Johnson began to criticize the press for their portrayal of Americans and American allies.
President Lyndon B. Johnson backed out of the race for reelection.

Question

How did Walter Cronkite's proclaimation that the Vietnam War was unwinnable affect politics?

It did not.
Images like the footage of Nguyen Ngoc Loan, which never would have made it past the censorship of the World War II era, were widely broadcast.
President Lyndon B. Johnson began to criticize the press for their portrayal of Americans and American allies.
President Lyndon B. Johnson backed out of the race for reelection.

inowalst · Answer

What do you think? Any thoughts/ideas on what the answer might be?