What has happened to free speech and democracy?

I think I know why there is so much childish behaviour in parliament!  It's because they are all treated like children.  They are only allowed to voice an opinion if it "tows the party line"  Heaven forbid if someone wants to voice his/her own opinions.  What is the point of having debates in parliament if the outcome has already been pre-determined.  So, forget free speech, forget thinking outside of the square, because there is no real democracy, only party policies.  We don't have to agree with anything our politicians say, but they should have the right to say what they think, just like the general public does.