Mary Bart writes in this article, "...even if you do everything right, there still will be students who push your buttons and become (or have the potential to become) a destructive force in the classroom. This post and the other resources on this page will provide ideas for dealing with a number of student challenges.
This article by Victoria Smith PhD at Faculty Focus deals specifically with students who present disciplinary problems.
This post by Dr. Liz Hardy lists the most common student behavior problems and practical strategies for handling them.
Communicating with difficult students is tricky but important. This webinar provides examples of classroom scenarios and instructor responses.
This video by Haleigh Franz defines the difficult student and explores how an instructor can bring the student back into an effective mode of learning.
Plagiarism is a sticky, often emotional issue to deal with when it turns up in a classroom. This video by Jan Melnik provides information on how it happens and how to effectively discuss it with students.
The video also references this graphic below from The Visual Communication Guy.