Do you have any studies that actually quantify that? IMO large groups singling out and bullying individuals is not really a new thing, that has been happening for a long time.
Also I will clarify I am speaking from a US-centric perspective. Are you not in the US?
I have seen multiple academic circles seriously come to the consensus that innocent until proven guilty is not good as a general principle. This sort of thing IME occurs on mailing lists or in department meetings, and it has also ramped up considerably in just the last few years. I've never looked for literature on the topic, perhaps the institutions I am affiliated with just suck. But given the many others reporting similar sentiments I suspect there will be some literature on it as a broader phenomenon, at least in the US, down the road.