Yes, James Hodgkinson was a follower of Bernie Sanders. A private citizen unknown until he committed this heinous crime. It shows that mental illness doesn't discriminate. Alex Jones is a nationally known and heavily followed radio and internet personality that has been an influencer of the alt-right and very popular with conspiracy enthusiasts for over 20 years. David Duke is the former Grand Wizard of the KKK and his popularity and devotion of his followers is unparalleled by his supporters and members of the KKK and other hate groups. He is known as "perhaps America’s most well-known racist and anti-Semite" and he was a avid fan and endorser of DJT. I won't get into the fact that Trump refused to denounce him and denied knowing about him or despite saying he did ten years ago.
So no, your analogy was a poor attempt at rationalizing two completely different scenarios.
FMP