RICO, as you may know, is a law passed in 1970, meant to be used against the Mafia. It allows the government to seize money before a guilty verdict if there is a “pattern” of racketeering (defined very widely).
Of course, once you seize someone’s money, they generally can’t hire a defense lawyer, so they tend to have to plead. I respect public defenders greatly, but if you’re in real trouble using one is a crapshoot at best and even the best ones can’t put in the time and work a private defense lawyer can.
Back in 2008 I suggested using RICO against the banksters: there was a pattern of fraud. I did this because I hated the banksters and I hate RICO, and the best way to get rid of bad law is to use it against important people. (Same reason I wanted the banksters thrown into nasty prisons.)