Aren't the beliefs founded though?
There are immigrants who commit crimes. Sure, it's not _every_ Mexican is a rapist and we're probably talking about basis points of basis points here. But it's a foundation.
Hunter Biden did get money from people who wanted access to Joe Biden. Sure, Joe didn't actually help them out. But it's a foundation.
The problem isn't the unfoundedness it's that it's extrapolated beyond what the foundation supports.