First, there is no "fact" in there. "Should" by inference points you to an opinion rather than fact.
Fact: Some roses are red.
Opinion: Roses should be red.
Considering that your example of a "fact" starts with an opinion, we don't have much to go off of.
We can get into nuanced comment of fact versus opinion, how facts are mediated through our biases to color our conclusions, or how with many facts we are dealing with statistical models rather than physical laws of the universe, how our biases and collection models can lead us to inaccuracies in what we consider true, or how social truths are only as true as our belief in them, but if we can't even get the difference between fact and opinion, I hold no hope for such nuance.
Fact: Some roses are red. Opinion: Roses should be red.
Considering that your example of a "fact" starts with an opinion, we don't have much to go off of.
We can get into nuanced comment of fact versus opinion, how facts are mediated through our biases to color our conclusions, or how with many facts we are dealing with statistical models rather than physical laws of the universe, how our biases and collection models can lead us to inaccuracies in what we consider true, or how social truths are only as true as our belief in them, but if we can't even get the difference between fact and opinion, I hold no hope for such nuance.