This. So much this. Communication. And grace. If you're not sure if something is welcome, ask... politely. If someone does something unwelcome, say something.

This. So much this. Communication. And grace. If you're not sure if something is welcome, ask... politely. If someone does something unwelcome, say something... politely. If you see two other people involved in an unwelcome exchange, try to smooth the situation over while teaching lessons... politely. I volunteer with a variety of alternative groups. It's actually logically impossible to act in a way that everyone's norms around touch are satisfied, because many are mutually exclusive. In an absence of clarity, all we have is communication, consent, and fundamental decency in how we treat each other when one or both of us &#+@s up. Because we all will, at one point or another. Teaching children to reach for polite assertiveness when called for, and polite apology when due, would go a long way towards making the world a better place. (And just to head off the inevitable: we're clearly talking about sub-criminal actions here)