>offence to wolf whistle a girl or pass a remark
Problem with a "criminal offence" like this is, unless the "victim" can identify the whistler, nothing will or can be done - the potential way of identifying the "criminal" is someone (who has been "checked" and "certified" ) trawling through CCTV footage - all ridiculously expensive. Even if an offender is identified, a wise one simply says, "Not me, guv", leaving the expense of a trial to convict him; the less-wise admits the "offence" and has the rest of his life blighted by draconian penalties like being named on the Sex Offenders Register.
Problem with the shiny-arses that put themselves up for election is some actually thought making wolf-whistling a criminal offence was A Good Idea; any that had an attack of common sense wouldn't vote against it for fear of being branded misogynists and similar by the same harpies that are now whingeing about being arrested at the "vigil". So we end up with wolf-whistling being a "criminal offence" but without any realistic way of solving the "crime"; nevertheless, the single-issue harridans are satisfied they've "made society safer".
>now we have to have communal grieving
Not only that, either the Beeb or ITV managed to find some far kwit to say on camera that preventing communal grieving (while breaking the law and potentially catching the 'lergy) was against her human rights ...