Hear how social media is defending Luigi Mangione

After police found the words “deny,” “defend” and “depose” printed on shell casings near the site where UnitedHealthcare CEO Brian Thompson was gunned down, merchandise bearing those words started to appear online. CNN’s Jason Carroll reports. Then, R.J. Martin, a friend of Luigi Mangione, who is suspected of having killed UnitedHealthcare CEO Brian Thompson, joins CNN's Erin Burnett.