When someone says that they're robbing a bank, they are using the term metaphorically. They are not actually going to rob a bank.
To dehumanize someone is to reduce them to the level of an animal. You might dehumanize someone by calling them names or making fun of them.
perplex is to confuse or to make something difficult to understand. When you perplex someone, you make it difficult for them to understand what you're saying.
To freak out is to become very upset or scared. When the students freaked out, they became very frightened and were not able to think straight.
Audacity is the courage to do something that you know is risky or dangerous. Sometimes audacity is required in order to do something that is important.
Disseminators are people who spread information or ideas. They are usually responsible for getting information out to a large audience.
A cultivator is a person who grows crops. They usually work on a farm, but they can also work in a garden.