Sometimes it is very easy to be swept away by emotion. Sometimes it is very easy to make decisions based on desire rather than evidence. As a prosecutor, you can't make decisions based on what ought to be. You must base them on what is. When those who are swept up in the emotion of an event clamor for a certain outcome, you must have the gumption to make the right decision, not the popular one. Even though no one else will admit the Emperor has no clothes, you must speak the naked truth as you see it.
This means you will file charges against popular people and decline to file charges against unpopular people. This means that when you charge, you will be criticized for charging too much or too little. Regardless of political expediency, you must do what is right.