Honestly I don’t think so. This gives direct incentive for schools to crack down and start seriously propagandizing kids. Roof’s victims were just a bunch of churchgoers. Sad and community rallied, but not much effect beyond that. Roof was also pre Trump, pre mainstream WN
People weren’t really familiar with WN beyond the KKK and other irrelevant faces when Roof happened. Now people have a new, fresh, scary face to point legislation at called the alt right. RW groups could legit start being classified as terrorist orgs because of this.