Facts don't change our minds because we make up our world views and beliefs in a way that's expedient for us to happily continue about our lives.
For instance, we all NEED to believe we're the 'good' guys. Whether the 'we' is our religion, our job, our state, political stance, etc... This prevents existential angst from realizing we're in the wrong, and then needing to change our behaviour which would disrupt our everyday lives.
This is also the reason why we stay in failed relationships, keep toxic friends, jobs we hate, etc... It's easier and more conducive to our survival instincts to keep the status quo, whatever it is. Only when things get extremely bad do we ever change.
On the flip side, let's say popular opinion about a particular topic flips. When it becomes expedient to change our opinion, then we're very quick to do so. When keeping an archaic opinion begins to cause friction in our everyday lives, we change to the prevailing opinion because again, staying with the tribe is easier than going against it.
But of course, realizing all of this would be to reduce human existence to base survival instincts, which would also ruin our self-narrative. So we think we're all special, enlightened, unique and think for ourselves no matter how much the evidence points to the fact that we all devolve into holding the same popular opinions.