This is a false equivalency wrapped in an overstatement. The term “chilling effect” suggests that the DOJ’s actions made parents afraid to speak out for fear of legal or governmental consequences. He gives no examples of this happening, nor could I find any.
Hamilton could be talking about local schoolboards having people arrested for disruptive behavior, of which there is more than one example, but also would be local law enforcement’s purview, not the Department of Justice. It’s laughable for him to claim that local schoolboard meetings are somehow under the purview of the Department of Justice.
The idea that if the DOJ hadn’t been so focused on squashing free speech at schoolboard meetings, they could have prevented pro-life health care clinics from being vandalized by pro-choice advocates, is ludicrous. (And yes, he’s talking about that, not the FAR more common incidents of pregnant women seeking care who are terrorized by pro-life advocates.)
Full contextual analysis of Section 3.8: Department of Justice here.