Answer:
The involvement of media reduce Citizen's approval rating over the government.
Step-by-step explanation:
Watergate Scandal, the Vietnam War, and the Persian Gulf War are all events that generally disfavored by the American people due to the expose made by the media.
The Watergate scandal lead to the impeachment of Richard Nixon after The media managed to expose that He ordered his people to steal some of incrementing evidence against his past actions in the Democratic National Committee office.
The Vietnam war was extremely opposed by the citizens due to the high death toll that it caused to American soldiers along with economic strain that it created to US economy.
Persian gulf war Massively damaged the perception toward George W. Bush because he ordered the attack due to baseless suspicions that Sadam Hussein was hiding weapons of mass destruction. (Even after His Intelligence agents warned him that they couldn't find the evidence for it)