Ostensibly, yes, but it was the other person's choice to produce the gun and raise it. To ensure total avoidance of such situations, you would have to make sure you never come into contact with any armed Pringles advertisers, and since you never know for sure who or where they are, you would have to live your life in complete physical solitude.

This is probably one of the wilder hypothetical tangents I've read in awhile.