How might a proper understanding of the “Lesser Jihad” lead to a clear distinction between radical extremists who claim to be Muslim, homework help

How might a proper understanding of the “Lesser Jihad” lead to a clear distinction between radical extremists who claim to be Muslim (e.g., ISIS, Al Qaeda, etc.) and the vast majority of the global Muslim community who vehemently reject the practices, terrorist bombings, etc. of these radical groups as evidenced by the events in Paris on 11/13?