Just write or choose a good ethical framework that is actually relevant for the management of online communities. There’s better, more modern shit out there that also includes the principle of do no harm.
You know what would be helpful here? Actually naming and/or linking to some of these better frameworks you think they should consider using.
The protection detail would not arrest him. The agency with the warrant would coordinate with the secret service to either get access to Trump or, more likely, give Trump the opportunity to surrender.