Society is becoming more and more tolerant of laws which infringe upon the rights of the majority in order to punish the few.
Whether its "dangerous dog breeds", firearms, other types of pets, remote control planes, pre-existing pig farms, etc.
The driving force behind this is, of course, attorneys and self-serving politicians, which are too often synonmous.
Note that, as people have less rights to defend themselves physically, that they come to rely on police and animal control and demand restrictions on dog ownership and the like.
We've been saying it for years. It is just that the Slippery Slope is now a bobsled run going for a world record speed...
Sadly, I think that most Americans (and lately, it seems, especially religious conservatives) desperately enjoy punishing others, and are happy to use the power of government to do so, as a way to help ease political frustrations from other areas. Of course, since the two sides frustrate each other ceaselessly, there seems to be no end in sight to this ugly spiral.