Low and Chiam know where to draw the line. You cannot remain silent and antagonistic all the time. They are merely following rules of civility. JBJ went a little overboard and he was practically ignored in Parliament's MP's lounge during breaks. Members of the public also expect their conduct to follow similar rules. Chiam was famous for lecturing the Ministers and even Jayakumar had to face him.
Agree much with what is said here..
If you are a politician, you ask yourself what is your ultimate goal.
You ask what you can fight for based on what the electorate is.
If you wish to fight for your ideals not line how the person in the street feels, so be it. But if you do not get elected, do not blame them for not voting for you. They just do not agree.
Politics is how you craft for it and all is fair game. It is difficult at times to figure out the conniving and the manipulations at many moments. LKY is honest and put it straightforward as it is. You think for one moment, the exposure of his family members to the public or last election's media clip by CSJ are not planned. Both sides of the political spectrum play whatever to their advantages.
End of day, I will just take it you have done your job as a politician to build a better place for Singapore. A good politician is one who can manipulate to the best without overly overriding what are deemed as acceptable sensibilities.