If the roles were reversed
A lot of progressives became quite pointed in their criticism of Obama over a number of issues, and a great many liberals (including most liberals here, I think) openly criticised Clinton after we became aware of how unfairly Sanders was treated by the DNC.
I dunno. I think if liberals put someone in the White House who went on to endanger the country and her people, I think many if not most of those same liberals would become very vocal opponents of that president. I hope I'd be among them.