I'll add my 3 cents.
It seems that the period of insults has already passed, and it was said that members of the DT should behave with restraint.
The word insult “rat”( кpыca) in Russian is very bad; for such an insult the opponent’s face will be beaten no less than for telling the opponent to go to hell or saying bad things about his mother or relatives.
Maybe in English this is not a very strong insult, but in Russia such words can cause death. And any verbal phrases associated with distorting the opponent’s last name usually lead to fights or murders.