SilverTrees:
Clearly defining an "attack" is somewhat difficult, as every interaction has strong potential to develop into an attack. Human behavior has a natural tendency to escalate. Simple questions quickly move into an interrogation, which will devolve into people yelling at me if I don't answer well enough - and that can easily lead to violence.

I consider any contact not expressly requested - made by me toward others or by others toward me - trespass, no different had someone marched on someone else's front lawn. No one has ever had a reason to contact me that wasn't ultimately a maneuver to harm or harass me in some way. I would not necessarily consider trespass an attack, per se, but few trespasses end peacefully. I would have to say anyone who persists in the trespass would be considered attacking.

I cannot give you specific examples as my brain never remembers specifics. I'm sorry.