By not making laws based on moral outrage but pragmatism. In countries where sex work/drugs/etc are legal - or at least decriminalised - it isn't necessarily do

By not making laws based on moral outrage but pragmatism. In countries where sex work/drugs/etc are legal - or at least decriminalised - it isn't necessarily done because the majority feel this is the right thing to do, but because of harm reduction after consulting with experts in the field. Similarly, if you want less dead schoolchildren, this one weird trick of highly regulating firearms seems to work. Also, there are other legal avenues, see OJ Simpson's criminal vs civil trials (edit: this trial is a civil one. Not everything that is wrong has to be a crime to be punished, and not every court system has to work by the letter of the law like the US does.