Time was, when 'liberals' would argue that citizen ownership of firearms was unnecessary for protection against the criminal element because the police would provide the needed protection. It was a weak argument then, but a nonexistent one now, what with the defunding of the police, the elimination of cash bail, and all the other 'reforms.' The law-abiding citizen is now on his own, and he knows it, as is evidenced by a demand for weapons and ammunition far in excess of supply.
One has to question the intelligence of those 'liberals' who count as well-intentioned. (There are some!) These 'liberals' want fewer guns in civilian hands. But their policies impede that outcome. When government at federal, state, and local levels fails to do the jobs that justify its existence, such as protecting life, liberty, and property, then the citizens have to do the job for themselves. Trouble is, too may of these folks go off 'half-cocked.' They fail to get the requisite training; they fail to practice with their weapons; they fail to exercise due diligence in the storage of their weapons; they fail to develop the proper mindset for effective armed self-defense.
Of course many if not most 'liberals' are not well-intentioned. But that is a topic for another time. As some wit once observed, "Brevity is the soul of blog."