Money laundering is a process that turns "dirty money" into "clean money." The proceeds of crime - dirty money - are disguised to hide their illicit origins, and then the money is integrated into the legitimate economy. The process washes dirty money until it appears to be clean. Often, but not always, the cleaning of dirty money involves moving it across national borders and integrating it into another economy. Criminals disguise the illegal origins of their wealth, and terrorist organizations try to conceal the destination and the purpose for which the money has been collected. Money laundering plays a part in corruption as corrupt public officials need to hide the kickbacks they receive and the public funds they may have misappropriated. Organized criminal groups have substantial proceeds from drug trafficking and commodity smuggling. Together, these activities have profound social consequences and require cooperative international activity to combat them.