Slippery slope

Conclusion depends on unlikely chain reaction

Attempts to outlaw pornography threaten basic rights and should be summarily abandoned. If pornography is outlawed, censorship of newspapers and news magazines is only a short step away. After that there will be censorship of textbooks, political speech

If marijuana were legalized for medicinal use, it would lead to a cascade of similar measures. Once available to a small number, a thing will quickly be available to all. Decriminalization of all controlled substances will follow.