If a Nazi, a terrorist, a boer, a fascist raises their hand against you – do what you need to do to protect yourself
But a civil society based on law and order has due process for criminals, not mob violence
Chanting for their death or calling for violence against them is succumbing to their ethos, as immediately emotionally satisfying as that might be
Characterizing this as a matter of freedom of expression both ignores the consequentialist arguments and precedents against unrestrained public calls for violence, and conflates legal permission with deserving a platform