Alma 1

It seems that no sooner than the people of Nephi are given "freedom of speech", that Nehor went -

"...about among the people, preaching to them that which he termed to be the word of God, bearing down against the church; declaring unto the people that every priest and teacher ought to become popular; and they ought not to labor with their hands, but that they ought to be supported by the people.
4 And he also testified unto the people that all mankind should be saved at the last day, and that they need not fear nor tremble, but that they might lift up their heads and rejoice; for the Lord had created all men, and had also redeemed all men; and, in the end, all men should have eternal life.
5 And it came to pass that he did teach these things so much that many did believe on his words, even so many that they began to support him and give him money."  (Alma 1:3–5)

Alma defines this as priestcraft.  In my mind, priestcraft extends beyond religion, but anyone that preaches commandments and teachings contrary to the prophets for gain is priestcraft.