Richard Nixon was a president of the United States. He had many enemies. These were people who did not agree with him. Nixon's team made a special list of these people. The list had names of politicians, reporters, and even actors.
The list was a big secret. Nixon's team did not want people to know about it. The goal was to cause problems for the people on the list. They wanted to make life difficult for anyone who was against the president.
Many years later, Donald Trump became president. He also had a list of enemies. But Trump's style was very different. He did not keep his list a secret. He talked about his enemies at big meetings and on the internet.
The main difference was how they used the government. Nixon used it quietly to bother his opponents. Trump spoke openly about using his power against people and groups he did not like. This open approach is what makes the situation different and, for some, more worrying.