I hate people that try to defend the action of someone such as a rapist.

Since we're all hating things, I hate it when attempting to defend the person is read as a defence of the act. There is nothing that can ever excuse or make up for rape- or murder- or crime generally (well, depending on the crime.) But sometimes there is a defence of the person, who can't be separated from their crime but- the more we seek to demonise the rapist, to say that some people are just bad, the further away we go from actually eliminating violent crime. Because the only way to do that- or reduce it- is to understand it, just like any other phenomenon.