Bad Perception about a thing sometimes makes it bad in everyone's eyes but the reality shows or statistics show that it's not like that it was said. Perception can be built to damage the popularity or maybe wrong judgment also cause a bad perception. So before making any perception about a certain thing or making a judgment, it's necessary to see the statistics and then judge its pros and cons.

Earlier it was a perception about the Bitcoin or Digital Currencies that they are liked by the criminals and money launderer. As the U.N Treasury Secretary Steven Mnuchin said that “Cryptocurrencies such as bitcoin have been exploited to support billions of dollars of illicit activity like cybercrime, tax evasion, extortion, ransomware, illicit drugs, and human trafficking. Many players have attempted to use cryptocurrencies to fund their malignant behavior. This is indeed a national security issue.”

But now the analysis of UN Drug and Crime statistics and other reports show that it's not the reality. Liking of traditional currency is 800:1 rather than digital currency. Criminal Use fiat money or cash more than the digital currency. Also, cash is more in use for money laundering.