Helaman 1

 We see political upheaval even in the days of the Nephites where - 

"...Paanchi, and that part of the people that were desirous that he should be their governor, was exceedingly wroth; therefore, he was about to flatter away those people to rise up in rebellion against their brethren.

8 And it came to pass as he was about to do this, behold, he was taken, and was tried according to the voice of the people, and condemned unto death; for he had raised up in rebellion and sought to destroy the liberty of the people.

9 Now when those people who were desirous that he should be their governor saw that he was condemned unto death, therefore they were angry, and behold, they sent forth one Kishkumen, even to the judgment-seat of Pahoran, and murdered Pahoran as he sat upon the judgment-seat.

10 And he was pursued by the servants of Pahoran; but behold, so speedy was the flight of Kishkumen that no man could overtake him.

11 And he went unto those that sent him, and they all entered into a covenant, yea, swearing by their everlasting Maker, that they would tell no man that Kishkumen had murdered Pahoran.

12 Therefore, Kishkumen was not known among the people of Nephi, for he was in disguise at the time that he murdered Pahoran. And Kishkumen and his band, who had covenanted with him, did mingle themselves among the people, in a manner that they all could not be found; but as many as were found were condemned unto death."  (Helaman 1:7–12)

Obviously, this could even happen in our day with secret combinations and desires for power.