They want a culture of quivering victims. Looks how well it's worked so far. People think the police can teleport into their homes, place of business, college, or somewhere on the streets the instant they dial 911.
I don't know how anyone can be anti-gun. I've heard their arguments and they are nonsensical.
Boils down to:
Gun = Violence
People with Guns = Violent
No Guns = Utopian Society where there's no violence
No Guns = Lives saved
No Guns = No more death
No Guns = Call police because they'll save you
None of these arguments make any damn sense in the real world.