Ignorance carved in stone.It's next to impossible to change a liberal's mind about political issues.
Because only liberals are credible sources of information. No matter how factual what you say may be, it will be ignored if you're not one of them.
This intolerance won't allow liberals to even acknowledge the existence of any information that might go against what they've been taught.
Someday, this will be personified on the Washington Mall with a sculpture of the Magic Negro his his head up his azz.
They'll hire a Chinese sculptor, too.