They aren't doing a good job. Even in this interview Harris began laughing hysterically when talking about native Americans or some such.
Knowing someone personally who laughs a loud cackling laugh at a lot of stuff that is not even worth a grin, let alone a laugh....it makes me want either want to get up & leave immediately or punch them in the mouth. Neither would be socially acceptable in the particular setting, but neither is their obnoxious cackling.