That's quite a question.
I'm not sure that's something for which you can just write laws and write rules. That really is about people's conduct and behaviour and how they choose to practise politics. The attacks go in both directions, and there has been a deterioration of civility and decorum in this place since I came here in the 1990s. I don't know what you can do about that other than police your own behaviours, your own conduct and your own practice of politics.