I can't stay completely silent on this one.
The actions performed and the attitudes shown are absolutely horrendous - and the evidences are overwhelming. Still, I politely disagree that all Russians are responsible. There are Russians sitting in jail at home for trying to protest against this madness - are they also to blame? There are Russians outside Russia that have chosen to flee from Russia - are they also to blame? It's a fallacy to blame the whole population for actions done by one person or a group of persons - regardless of how horrendous said actions are.
One of the reasons such atrocities can happen is that those scumbags seriously believes that "all Ukrainians are nazists and untermensch". By promoting the idea that all Russians are responsible for those actions, you're indirectly promoting the idea that similar actions can be done against Russians, just because they are Russians.
By 'all russians' I imply this overwhelming majority who directly support or are silent - thus supporting the war, too. I'm grateful to those who protest, regardless of the danger, who do not keep silent and do not pretend like nothing is happening. I don't know such people in person, though.
But the rest - if they are capable adults and do nothing - yes, they are to blame, too.
Unfortunately too many of them believes in the Russian propaganda. Those people who sincerely believes that the Russian soldiers are on a "peace keeping mission" in Ukraine to rescue Russians in Mariupol from a genocide, believes all the stories from the northern Ukraine is "fake news", believes the missile attack at Kramatorsk was performed by Ukrainians, etc ... in my opinion they are just stupid, not evil.