There is a very large alcohol abuse problem in indigenous communities. As a result, the government has declared certain areas (Glenelg, Adelaide city centre, and Port Augusta) to be "Dry Zones." Drinking or transporting alcoholic beverages to the area can result in loss of your vehicle. At one point, kava was considered an alternative for those in the Northern Territory since it has sedative properties and it reduces alcohol-related violence; the plant was banned in 2007.
Since the Dry Zones have been in effect, there has been a large reduction in alcohol-related violence, people milling about for no reason and anti-social behavior.