What are the disadvantages of freedom of expression?

One disadvantage of freedom of expression can be the potential for a harmful impact on other people.

People can often confuse freedom of expression with being able to say and believe anything.  Freedom of expression is perceived to be limitless.  Those who zealously embrace see it as a means to say whatever they wish. People who ardently embrace freedom of expression for their own purposes might forget that their expressions have an impact on other people. Freedom of expression can allow some people to overlook the consequences of thought and action.  

In some cases, freedom of expression might be dangerous.  For example, the ability to freely express one's thoughts can result in targeting an individual or another group of people.  People who enjoy harassing or bullying another person can say that they are simply "expressing their thoughts" and that it is their right to do so.  Freedom of expression can also be used to target groups of people.  A historical example of this is seen in groups like the Ku Klux Klan. They use freedom of expression as a shield for their thoughts.  When questioned, they will claim that they are simply freely expressing their own beliefs.  In this example, freedom of expression can be seen as disadvantageous.