I think there's a huge difference between disliking something, and making it illegal.
Guns are so common that we'd never get them all. And I think there's something culturally about parts of the US which contribute to gun homicides. It would be nice to get some common-sense regulations for guns, and it would be very nice if we actually had a decent social safety net available to everyone, to reduce crime. But both sides seem to be idiots in this regards.
The US has tried to make alcohol illegal once before, and the result contributed to the rise of organized crime and excessive violence.
The US has currently prohibited many recreational drugs, and the result is fueling violence both here and in other countries. While the lack of quality control for illegal drugs has made it far more risky for drug users.
Smoking, thank God, has never been prohibited. Instead, through some freak act of sanity, efforts to change cultural thinking has resulted in reduced smoking rates. While some of the campaign has gone overboard, as a whole, it's actually a decent way of handling a harmful, addictive, yet enjoyable substance.
Nudity? Seriously, it's not harming anyone.
About the only one I see being advocating being made illegal is public masturbation, since you could argue there's a health hazard. Then again, couldn't that just fall under other laws?