After a week of gun violence, St. Louis Mayor Francis Slay recently asked his constituents to “imagine this week without all the guns,” before calling for “common sense laws” — the proclaimed goal of anti-gun groups everywhere. If they can’t make guns just disappear, they can do their best to prevent people from exercising their Second Amendment rights.

Recently, Seattle passed a “gun violence tax,” amounting to $25 for each firearm sold in the city. Add to that a 5 cent tax per round for nearly every type of ammunition. The revenue allegedly would be used for “gun safety research and gun violence prevention programs” — which certainly sounds like it would be funneled to anti-gun groups.

The NRA announced today that it is filing suit against Seattle over the gun violence tax, explaining that the tax violates a Washington state law that prevents local municipalities from creating their own firearm regulations.

Joining the NRA in its lawsuit are the National Shooting Sports Foundation and the Second Amendment Foundation.

Bearing Arms reports that Lawrence G. Keane, senior vice president and general counsel of NSSF, called the law “nothing but a ‘poll tax’ on the Second Amendment and an effort to drive Seattle’s firearms retailers out of business.”