Topic Introduction

The topic I am writing about is about the use of lethal force for police officers. I chose to write about this topic because I have always been interested in an officers choice to use lethal force, and what happens when he does. There is also many articles and laws about this so i believe i wont have much trouble finding information and articles to read and write about. I know some information already regarding this topic, which is another reason I am writing about it because I feel like I have a head start for this paper which we have to write. I still have some questions about this paper which I hope to answer before I start to write it. One of my questions is how do I start my research, although I do know where to find my information. I know I am looking for articles and journals but I want to know how to start  to look and what kinds of information would be the most suitable for my paper. Also i would like to peoples opinions on lethal force. Some people feel cops should shot back sooner than they actually do. Then others feel like cops shouldn't shoot at the person til they are shot at themselves. I would like to know how people feel about the two.