The introduction of my first draft

The introduction :
1. Attracts the audience.
2. Explains the topic.
3. Declares the thesis of your argument.

My introduction :

 'The Second Red Scare', 'Salem Witch Trials', 'The Holocaust'... What is the common thing of these brutal events? That is the mob psychology. Then, what is the mob psychology? It refers to the behavioral tendency of people (or other social animals) to act in unison with the group of which they are a part. And through it, we can know that human beings tend to exhibit very unique behaviors or habits once they're in a group. Mob psychology has often become attached to the idea of human selfishness and competitiveness so people commit the incidents as mentioned above. Now I want to give you a question. Do you think the majority are wise? Some of you can say yes, but I think the answer is 'no.'