There is a difference between having responsible gun laws and confiscating everyone's guns. I know the thing to do is go to extremes, like your post showed, but in reality, both Democrats and Republicans own a whole lot of guns. A gun ban would never fly. That being said, having laws on the books that required background checks, waiting periods, safety locks, registering your firearms etc...are all responsible actions.
1) Responsible gun laws lead to ever more restrictive gun laws until guns are eventually being confiscated.
2) Gun bans already exist....Washington DC, Chicago, Morton Grove Illinois are all prime examples.
3) Waiting periods don't stop or decrease crime. Safety locks only slow down law abiding citizens who need to defend themselves, and locks only keep honest people honest.
Background checks I can agree with as long as they are the variety that can be done while you fill out the rest of the required paperwork to purchase a firearm.