The point of these measures is retribution against a single villain who allegedly escaped the severe penalty she deserved. But a law specifically aimed at preventing a repeat of today’s notorious case will almost certainly be irrelevant to the shocking crime of tomorrow. In these instances, the unforeseen and surprising are the norm.
Our politicians ought to be the mature voices of reason saying “yes, we feel outraged too, but we shouldn’t change the system based on one outlier”. Instead, as often as not they are the ones pandering to the mob.