>Who is the "they?" The rank and file employees who had nothing to do with this decision?"Yes, them. Exactly them. They're likely going to be faced with protestors and other types of pushback, and it seems rational to not look forward to that. They're at the event representing their company, and so they must face the conequences of those decisions.
They should not, themselves, be directly blamed, but it's their job to front for the company, and that won't be a comfortable thing to do right now. Now though, if they decide to keep working for the company, they are complicit In it's actions because now they know better. I wouldn't expect them all to quit at once, but if they don't start looking around for other opportunities then they share an increasing part of the blame.
We all face this in our work. Decisions we disagree with, we must decide if it's something we can live with it not. If we decide we can live it then some level of culpability accrues to us. Certainly this can be mitigated by working to change things from within, but it's still a factor.