Wikipedia on Colin Barnett’s “Controversial Policies”:

In October 2004, Barnett led a campaign to re-criminalise homosexuality for anyone under the age of 18. This policy was met with fierce criticism from the community and was opposed by all other parliamentary parties, including the Nationals.[19]
In October 2009, Barnett announced a series of new policies relating to drug legislation including a repeal of the Cannabis Control Act 2003.[20] The previous laws were formulated by Geoff Gallop's drug summit, taking input from experts such as academics, police, social workers, lawyers, medical professionals and members of the public.[21] Barnett has stated it is his intention to overturn these laws because of his beliefs and stated that the drug summit members made a mistake introducing them[22] and that cannabis was a "gateway drug".[23] To help with the enforcement of this new policy, Barnett also supported legislation to give police the power to search and seize property without any suspicion or belief that a crime has been committed.[24] A Liberal parliamentarian, Peter Abetz, voiced support for these laws in parliament by drawing reference to the work Adolf Hitler did to bring security to Nazi Germany.[25][26] Barnett stood by Abetz's statements, saying he was making a valid point.[27]