content: When you have the kind of market share that Facebook has, banning people from it is, in some cases, doing serious damage to their social activity. Some people (God help them) are actually dependent on Facebook for any number of reasons. The correct actions when someone says something you don't agree with is either to meet their argument with an argument of your own or to ignore them. Trying to silence others when all they're doing is voicing an opinion is not only counterproductive in the long run, it's evil.