On a grand social level, most left leaning people would prefer no easy access to guns. Other countries have succeeded in this, for their own reasons.
In the United States, the people targeting minorities have guns. Minorities buying guns is self defense and a reaction to increased persecution.
Other left leaning people who are normally against guns recognize that oppressed minorities are less likely to commit hate crimes with them(especially against people that support them), and more likely to use them for defense, as a deterrent, or for radical action against oppression.