I would put good money on enough Nevadans being outraged if the Bundys are murdered under color of authority, and under the direct urgings of Reid, that one or more of them decides it's time for Reid to leave this earthly vale of tears.
Got that Harry? They die, YOU die.
I'm not threatening you, I'm not a co-conspirator, I don't even know anyone who would actually do this, and if I ever got wind of an actual plan to off a sitting senator, I would report it, as much as I loathe you and everything you stand for, I would report it.
No, this is not a threat, it is merely a reading of the tea-leaves, (sorry, let's try another turn of phrase) it is merely a glimpse darkly through a glass. I foresee the murder of the Bundys will not go unanswered, and you, personally, will be the answer for dozens, perhaps hundreds of hotheads.
Free advice? Don't put them in a situation where they will believe they must hurt you...