Darrell Brooks is now serving six life sentences plus 700 years for driving his SUV through the Waukesha Christmas Parade exactly one year ago. Six people were killed and dozens more were injured. Now, a documentary has surfaced that shows Brooks discussing his addiction to methamphetamine while incarcerated six years ago. Law&Crime's Angenette Levy and addiction counselor Julie Goldberg discuss meth use and what it can do a person's brain long-term.