Since the beginning of the 20th century, most countries, including America, have enacted laws against the cultivation, possession or transfer of cannabis, a formal name for marijuana. But towards the end of the 20th century, decriminalization of the herb began. However, when California pioneered legalization of medical marijuana in 1996, few people thought it would lead to the legalization of recreational marijuana 20 years later. Now the legalization of recreational marijuana is old news, and “Safe Injection Centers” are showing up that allow people to legally inject illicit drugs under supervision. So, what’s next? Is the U.S. entering a trap to legalizing all drugs, and is California leading the way?