Mighty,

I'm not sure if I would call his boss ignorant. Marijuana is still a drug and the RMH logo definitely can be seen as a THCZ drink. If you were a supervisor you definitely need to approach the person that brought in the can. Even if marijuana is legalized, that won't mean it's still widely accepted at workplaces because it's still a drug dude. It's like gay marriage. It's accepted now, but some people are still homophobs. Country is still split on a lot of issues.