What is a popular example of when a leader of a country gained too much power then loses it because they abused their power?

Answer 1

In terms of democracies in general, and the United States in particular, President Richard M. Nixon stands out as a notable example. First taking office in January 1969, Nixon gradually gathered more and more power and decision-making within his White House staff, often keeping Congress and his own Department heads in the dark. One example was his decision to expand the Vietnam War by (secretly) bombing Laos and Cambodia. Ultimately, though, Nixon's main abuses of power stemmed from his obsession with his political opponents. His determination to discredit Pentagon Papers leaker Daniel Ellsberg ultimately led to operatives burglarizing the office of Ellsberg's psychiatrist. The Watergate break-in was an attempt to bug the Democratic National Committee headquarters, and Nixon's subsequent moves to obstruct the Watergate investigation ultimately led him to resign in August 1974 under threat of impeachment.

Answer 2

Throughout history, many that fit this question. In our recent past, Adolph Hitler, Benito Mussolini, Joseph Stalin, Hugo Chavez, Idi Amin, Saddam Hussein, and Omar Qaddafi to name a few lost everything because of abuse of power.

In current affairs, look at what is going on in Venezuela. I consider the dictator Nicolás Maduro will soon be forced out. Of course, many more could qualify; history is full of tyrants.

I suppose, in our present world, tyranny and genocide should never be allowed. You can see what is taking place in North Korea, and although not called dictatorships, I include China and Russia. They  are very influential in their support of Cuba, and Syria.

Answer 3

The Shah of Iran prior to the Ayatollah seizing power.

Saddam Hussein leading to the second Iraq war.

Modern day Venezuela.

Abdul Selah in 2011 when he was removed from power in Yeman, there are many other examples of this.

If this includes people in general who were removed for abuse of power by major military might then Adolf Hitler would be the most historic figure for this to happen to.