Liberal and conservative are 1) psychological profiles from which emerge 2) moral sentiments or intuitions, and 3) value systems, or sets of principles of governance.
The first two of these are real and should be respected. Every individual deserves their dignity.
The third should be subjected to critical inquiry of the sort described by Popper, or by Jonathan Rauch in Kindly Inquisitors.
Our problem is that we conflate all three as one and the same, and we allow 1 and 2 to trump 3.
This is anti-science, anti-evidence, anti-critical-thinking, and anti-rule-of-law cognitively distorted thinking.
The road to hell is paved with moral sentiments that are allowed to overrule the value system of liberty, which is:
Process-based negative liberty, justice, equality, and fairness – aka the rule of law – and the separation and distribution of government power.
Antithetical to which is the value system of outcome-based positive liberty, equality, justices, and fairness – aka the rule of man – and the consolidation and concentration of government power..
The former of those value systems is that of conservatism and of the Constitution, the latter is that of liberalism.
The value system of liberalism, as opposed to its psychological profile or its moral sentiments, is antithetical to the value system of liberty itself, rightly understood; which is to say, to America.