Maybe not if the law states you aren’t supposed to be doing what Leno did. We also do not know if there were warnings that Leno did not see.
Sorry, but no.
Breaking a traffic law and “trespassing” (if it even was that), does not justify physically injuring someone, or creating the conditions that will almost certainly lead to injuring some one.
Booby traps that can cause serious injury are not legal anywhere.