To my mind, if you place it, no bad.

BUT, once YOU wire it up to any type of detonator, that is
"morally" the same as having detonated it.

Think on it this way...
Dude-A builds a brick wall, and Dude-B smashes his car into it.
Who is at fault,
1> Dude-B for driving his car on the highway...
2> or Dude-A for building the wall ACROSS THE HIGHWAY...

I go for option 2 myself....

[EDIT] or maybe option 3 = The city council for building the highway where
someone MIGHT build a wall across it...