Can't we just acknowledge the situation as a bunch of angry kids saying hurtful things for attention ("I wish you were DEAD!")?
Both neo-Nazism specifically and fascism and white supremacism more generally are at their strongest (membership, groups, activity, non-opposition from government figures) level in the US in several decades right now.
For neo-Nazism specifically it's probably it's strongest ever (actual support for Nazism was perhaps in some respects stronger in the US at some points prior to WWII, but that wasn't neo-Nazism, and that was before the worst Nazi atrocities occurred, much less were known.)
So, no, it's not a speculative future return to past strength (“comeback”) that is worrying about the neo-Nazi movement.
https://www.splcenter.org/fighting-hate/intelligence-report/...
The reason I think it's dangerous for the masses to decide things are facts based on "aggregate impressions" is that the media is not an objective sampling. For example, perhaps hatecrimes under Obama weren't newsworthy, but under Trump they are more-so because it hits all the emotional buttons.
This would lead to increased reporting, leading to an belief of increased prevalence.
I don't remember people getting as angry about Neonazi-marches in 2010, 2005, etc, but that's anecdotal.
The black teens that did it were "influenced by the events at Ferguson".
So I guess BLM should also be shut down - but instead, Twitter made a special logo for them...
This is in no meaningful way parallel to the Charlottesville case.
As for after the fact cheering of white people's deaths, may I direct you to the cesspit of Twitter...