[manuelmoreale]

Well if someone barred you from entering a fast food that would be assault, absolutely.

But what if someone was pretending to be a public worker doing sidewalk maintenance and that forced you to simply walk on the other side of the road and not being able to access the fast food?

That to me is more like an annoyance and a form of protest.

[seanmcdirmid]

Impersonation of a public official will actually get you thrown in jail, for some odd reason, much faster than assault will.