Why, in rare cases, are some juries sequestered

Answer

It is a seldom-used strategy defense attorneys can request to prevent jurors' judgment from becoming tainted by media coverage or other outside influences.

This usually happens when there is a high profile case

Explanation:

quid pro quo sexual harassment typically involves an employee being pressured by a superior to provide sexual favors in order to avoid being fired or demoted, or in order to get a promotion, raise or perk.