Anti-gun liberals want people to rely on government and police for their safety. As a matter of fact, police are poorly trained with guns. See the quote from the study, they are not much better than novice:

“[i]ndividuals who had completed standard law enforcement academy firearms training were not more accurate in their shooting” than those with Intermediate skills and “were only moderately more accurate than individuals who…had little to no handgun experience… It was unexpected that the Novices would be so accurate in comparison….