And consider what that looks like from the other side:
"Suddenly this person is bringing up outside issues to muddy the conversation! The people I watch on the news warned me about this. They won't stay on topic because they're disingenuous and they know it."
We have to listen to each other and engage with the individual things we are wrong about. We have to be very careful about labeling an entire person as "wrong." That presumes they cannot change or improve themselves: a very dangerous idea