Why are university professors afraid to go after cheaters?

In short, within the shopping malls of academia, the customer is always right.  Students have many powers at their disposal to make life difficult for teachers and professors.  There are student evaluations that effect administrative perceptions of said instructor as well as sites such as ratemyprofessor.com .  Then there is the difficulty a teacher might encounter just trying to make an accusation stick.  They also run the risk of retaliation by the student or their parents or friends.  Many teachers will attest that even when they followed the "document, document, document" dictum and had caught a student red handed, they were still thrown under the bus by their own administration when push came to shove.  Unfortunately, even college professors work within this climate of fear and retaliation.

http://www.huffingtonpost.com/david-callahan/faculty-need-more-support_b_787714.html
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