Most, but producing, buying, and selling pictures of naked children isn't one of them.
Protecting criminals ultimately makes us less secure, not more, in our rights.
Why? Because tyrants will capitalize on the very rational reaction people will have to what they believe is illogical and misapplied leniancy. They will readily accept extreme measures in return.
If you want a more libertine society, you have to change minds, not pick irrational instances of absolutism.
In short, you are picking bad ground and a horrible hill to fight on. Worse, when your position collapses, it puts the entire issue at risk. You live in a socialist state that has made firearm possession unreasonably difficult, but instead of making that argument, you state that no harm can come of giving convicted violent felons legal access to deadly weapons. Sorry friend, but you just lost 98% of the room and alienated 60% of it to the notion that the current application laws are heinous.