I don't think anybody should be jailed for their rhetoric. I said that the groups responsible for promotiing racism should be shut down.
Jailiing people for any kind of speech is definitely a precedent that should be avoided.
The kind of racism I'm referring to as espoused by groups like The Proud Boys is inherently violent, as are groups like 4Chan and 8Chan, where violence is promoted.
It is the violent rhetoric that needs to be addressed.
The old guy you cite is an idiot, but there's not much we can do about him.