Students meet such essays in Law, Political Science, Philosophy, and some other related disciplines. It might be helpful to think of the introduction as an inverted pyramid. Tell readers about the focus of your essay. Topic and context are often intertwined, but the context may be established before the particular topic is introduced.
Pretend that you try to make a first impression on the person you would like to date or an authoritative figure you wish to work for. Each sentence should become gradually more specific, until you reach your thesis.
Interesting facts about what you are going to discuss in your essay will intrigue your audience and make them want to learn more. You should begin your work with creating an outline of your essay.