Religion is so diverse, so many different varieties. Some are incredibly aggressive and invasive, others more benign and gentle. Some are exclusive, others inclusive. I could go on, but you get the idea. I was contemplating the effects that drugs have on people and society and the classification system government uses to evaluate risk, and it dawned on me: We need a method of evaluating religion that considers it's effect on people and society.
Yeah, think about this. Some religions are like marijuana, fairly harmless in modest amounts. Never connected with any violence or mayhem, pot smokers are rather innocuous. The Unitarians come to mind here. At the other extreme we have methamphetamine, the scourge of rural America. Some groups represented here might be Westborro Baptist or perhaps Pentecostal. Rabid and frightening with their wildfire effect on people and society.
Of course religion is dimensional, not linear. But this system still works. Heroin addicts can live functional lives for years. They often have normal families and jobs. They could be your neighbor and you would never know. I'm thinking Catholic here. Time honored and respectable. Often connected with organized crime. Let's roll with this!