Just as a perfect example of this is being liberal
Being a liberal is literally being for liberty
Liberty is basically defined by The Bill of Rights. Basically what the US Constitution is based in.
So the right has to make it a bad word because if people actually realized that, well yeah who doesn’t support that shit?! They won’t get anyone to vote against their best interests. Instead they require people vote to benefit social hierarchy that creates in groups that the law defends and out groups that the law binds.
2A for starters. 1A when it doesn’t suit them. As much as most don’t like it, hate speech is expressly protected speech. It’s morally repugnant, but still protected. Much like burning the flag. A ton seem to be ok with nixing the 4th in an attempt to nullify the 2nd.
Worth noting that “liberal” also has other connotations. You appear to be referring to social liberalism, which is a great thing for the majority of humanity. Frequently, the term is used to refer to economic liberalism, which is a right-wing ideology. This is why you have leftists speaking negatively about (neo)liberalism. It’s an ideology focused primarily on unfettered capitalism and devalues everything that is not directly related to profit. It is also the ideology followed by nearly all western governments’ ruling parties (including the Dems in the US).