These are hundreds of lists from all over the world updated a few times a day. They are very diverse ranging from known terrorist fronts to things as benign as a locally elected politician. Assuming everyone mentioned in the DB was somehow involved in fraud or criminal activity would be a gross misrepresentation. Financial institutions and other businesses use them in KYC/AML, but also for flagging accounts that might need some white glove /red carpet treatment as mistakes made on those could lead to bad press.