Injecting Strangers With Drugs

Adam waff is part of the senior team at the loop, an organization that specializes in drug safety and harm reduction. He says injecting strangers with drugs is a little bit more complicated than t v shows or organized criminals make it seem. So imagine i'm a night club or a house party, can you talk me through exactly what kind of scenaria would be necessary in order for a potential perpetrator to administer drug byr injection?