>Unfortunately, there's no way to separate accomplices from those who don't support it, but what do you expect to be done?
First of all, there is a way. See EU sanctions. They are targeted because there was an effort put in identifying the accomplices and finding the appropriate way to sanction them precisely. Second, by even contemplating the idea of punishing the innocent by applying the principle of collective responsibility you put yourself on the same level as Russian supporters of war. They do exactly the same to justify the war.
> Denial of Ukraine's existence as a sovereign country and as a people.
This is factually not correct. Russia recognizes Ukrainian ethnicity and Ukrainian language (see e.g. the annexation paperwork) and currently accepts existence of Ukraine as a sovereign non-aligned state. That’s literally their proposal for peace.
> The destruction and stealing of cultural artifacts;
Probably war crime, but not genocide. Ukraine wasn’t particularly careful about cultural artifacts in Russia too.
> Forcibly transferring and filtering children of Ukraine to Russia;
That’s complicated. They did move Ukrainian children from the war zone into Russia. It doesn’t constitute genocide obviously (they received proper care), but may constitute crime in some cases.
> Destruction of maternity hospitals, medical facilities, power grid
War crime. Not genocide.
>These are elements of the crime of genocide[0].
You missed the most important part. The definition actually starts with intent: following acts committed with intent to destroy, in whole or in part, a national, ethnical, racial or religious group, as such
Russia does not have an intent to destroy Ukrainians as a nation or ethnicity. Without intent every war would be a genocide. E.g. Americans did bomb a hospital in Afghanistan and did kill civilians.
I am aware of the scale of what’s going on there. More than you think.
>700.000+ children were kidnapped by Russians
This number is off by orders of magnitude.
>The point I was making is that Sanctions are already an example of collective responsibility.
Not exactly. They target state and certain actors. Yes, that may make life of ordinary people less comfortable, but this is not the same as when they are applied to a specific person or entity without due process.